PDS_VERSION_ID = PDS3 /* File Characteristics */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 640 FILE_RECORDS = 8210 /* Data Object Pointers */ ^TABLE = "sighting.tab" /* Identification Keywords */ DATA_SET_ID = "IRAS-A-FPA-3-RDR-IMPS-V3.0" PRODUCT_NAME = "IMPS Sightings File" PRODUCT_ID = "IMPS-SIGHTING-199703" INSTRUMENT_HOST_NAME = "INFRARED ASTRONOMICAL SATELLITE" INSTRUMENT_NAME = "FOCAL PLANE ARRAY" TARGET_NAME = ASTEROID START_TIME = 1983-01 STOP_TIME = 1983-11 PRODUCT_CREATION_TIME = 1997-03-24 /* Peer Review Date */ /* Data Object Descriptions */ OBJECT = TABLE ROWS = 8210 ROW_BYTES = 640 INTERCHANGE_FORMAT = ASCII COLUMNS = 145 DESCRIPTION = "The SIGHTING.TAB dataset comprises the IRAS Minor Planet Survey Final Product 108, the IMPS Sightings file. It contains a listing of 8210 sightings associated with 2004 asteroids. SIGHTING.TAB contains the observation index, the identification of asteroids sighted, information pertaining to observation times, positional information on the observations of asteroids detected, geometric albedos, diameters, and their associated uncertainties, input values used in the calculations of the geometric albedos and diameters using the asteroid standard thermal model, the observed flux densities in each band, detector crossing information, correlation coefficients, and status flags for reduction steps. In the original release of the IMPS data products, a number of 'derived status word (ADSTAT)' bits were always set to zero (flag not set), and have been excluded here, these were: ADSTAT 1 - All bands. Not used. Always zero. ADSTAT 2 - All bands. Not used. Always zero. ADSTAT 3 - All bands. Not used. Always zero. ADSTAT 5 - All bands. Not used. Always zero. ADSTAT 6 - All bands. Not used. Always zero. ADSTAT 7 - 100 micron band. No albedos derived from individual observations in this band were rejected from the final average using Chauvenet's criterion, therefore this flag was always set to zero for this band in this datafile. ADSTAT 8 - 25 micron band. The albedo calculation for each observation converged within 100 iterations, therefore this flag was always set to zero for this band in this datafile. In the original released IMPS data product, the bits in the ADSTAT word were ordered from right to left. A number of 'confusion status word (ASTCST)' bits were also always set to zero (flag not set), and have been excluded here, these were: ASTCST 5 - Set after hours-confirmation. Since sightings detections are only seconds-confirmed, this flag is always set to zero. ASTCST 6 - Set after hours-confirmation. Since sightings detections are only seconds-confirmed, this flag is always set to zero. ASTCST 7 - Set to 1 when an analog to digital saturation flag was set due to a bright source saturating at least one detector in this band. No such events in IMPS in any band. ASTCST 8 - Not used. Always zero. In addition, a number of 'asteroid status word (ASTATW)' bits were always set to zero (flag not set) or one (flag set) and have been excluded here, these were: ASTATW 5 - WSDB MCON position match. All MCON (WSDB 'weeks' or months confirmed) asteroid sightings are rejected by IMPS. These sightings are likely to be confused with stationary background sources (e.g. molecular clouds, galaxies, knots of infrared cirrus). See ASTATW 9. No accepted detections had flag set. ASTATW 8 - IMPS asteroid association. Set to unity for every accepted asteroid sighting, therefore the flag is always one in this file by definition. ASTATW 9 - Point Source Ver. 2 match. All asteroid sightings confused with sources in the IRAS Point Source Catalog are rejected by IMPS. This is a subset of ASTATW 5. ASTATW 10 - Detections only by small detectors on the outer edge of the focal plane array. No accepted detections had this flag set. ASTATW 11 - Predicted flux < 0.14 Jy. Set a priori for all candidate associations of an IMPS asteroid if no predicted flux density at 25 microns is greater than 0.14 Jansky. No detections were accepted when this flag was set. ASTATW 16 - 100 micron albedo used in the final average albedo. Since no 100 micron detections contribute to derived IMPS average values, this flag is never set. ASTATW 17 - Faint Source Version 2 match. All asteroid sightings confused with sources in the IRAS Faint Source Survey are rejected by IMPS (See MOSHIRETAL1992), therefore this flag is always zero in this data file. ASTATW 20 - Serendipitous Version 1 match. All asteroid sightings confused with sources in the IRAS Serendipitous Survey Catalog are rejected by IMPS (See KLEINMANETAL1986), therefore this flag is always set to zero in this data file. ASTATW 29 - Not used. Always zero. ASTATW 31 - 2+ sightings match. Set if more than one source is associated with a single asteroid prediction and therefore rejected by IMPS. No detections were accepted in this file when this flag was set. ASTATW 32 - Not used. Always zero." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "SIGHTINGS INDEX NUMBER" DESCRIPTION = "Sightings index number given to each individual detection." DATA_TYPE = ASCII_INTEGER START_BYTE = 1 BYTES = 4 FORMAT = I4 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "ASTEROID ID" DESCRIPTION = "The IAU asteroid number designation. For unnumbered asteroids, this field is blank." DATA_TYPE = CHARACTER START_BYTE = 6 BYTES = 5 FORMAT = A5 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "ASTEROID NAME" DESCRIPTION = "IAU asteroid name. For unnamed asteroids, this field is blank." DATA_TYPE = CHARACTER START_BYTE = 12 BYTES = 18 FORMAT = A18 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "ASTEROID PROVISIONAL DESIGNATION" DESCRIPTION = "Asteroid principal provisional designation. For named asteroids, this field is blank." DATA_TYPE = CHARACTER START_BYTE = 31 BYTES = 9 FORMAT = A9 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "OBSERVATION MONTH" DESCRIPTION = "Month (UT) in which the observation was made. All observations were made in the year 1983." UNIT = "MONTH" DATA_TYPE = ASCII_INTEGER START_BYTE = 41 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "OBSERVATION DAY" DESCRIPTION = "Day (UT) on which the observation was made. All observations were made in the year 1983." UNIT = DAY DATA_TYPE = ASCII_INTEGER START_BYTE = 44 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "OBSERVATION HOUR" DESCRIPTION = "UT hour of the start of the observation." UNIT = HOUR DATA_TYPE = ASCII_INTEGER START_BYTE = 47 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "OBSERVATION MINUTE" DESCRIPTION = "UT minute of the start of the observation." UNIT = MINUTE DATA_TYPE = ASCII_INTEGER START_BYTE = 50 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "OBSERVATION SECOND" DESCRIPTION = "UT second of the start of the observation." UNIT = SECOND DATA_TYPE = ASCII_INTEGER START_BYTE = 53 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = "SIGHTING TIME TAG" DESCRIPTION = "The NATIVE_TIME at which the first detector registered the source in a seconds-confirming detection or a non-seconds confirming detection explained by a dead or noisy detector. A source was scanned across modules of band 4 (100 micron), band 1 (12 micron), band 2 (25 micron), band 3 (60 micron), band 1, band 2, band 3, and band 4 detector modules in that order. Decreasing detector number values were crossed as a source was scanned. To determine the specific detector associated with the SIGHTING_TIME_TAG, one must identify the first band (in order 4, 1, 2, 3) which has a FLUX_STATUS_WORD greater than or equal to 4. The detector number then is the highest in that band's detector ID array." UNIT = DECISECOND DATA_TYPE = ASCII_INTEGER START_BYTE = 56 BYTES = 9 FORMAT = I9 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = "SATELLITE OPERATIONS PLAN NUMBER" DESCRIPTION = "The satellite operations plan (SOP) is the basic time interval of operations and data acquisition during the IRAS mission, corresponding to the time between station passes, varying between seven and eight orbits (10 to 14 hours). There were two SOP's per day or 600 SOP's in the entire mission. Each SOP consisted of 76 or fewer commands (OBS) for survey observations, pointed observations, calibration measurements, and other measurements, each of which was designated by an OBS number. Julian date of observation can be estimated from the SOP number by the formula JD=2445360+SOP/2." DATA_TYPE = ASCII_INTEGER START_BYTE = 66 BYTES = 3 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = "OBSERVATION NUMBER" DESCRIPTION = "Observations or commands were numbered sequentially within each SOP. Each SOP consisted of 76 or fewer commands for survey observations, pointed observations, calibration measuremnets, and other measurements, each of which was designated by an OBS number." DATA_TYPE = ASCII_INTEGER START_BYTE = 70 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 NAME = "OBSERVED RA HOURS" DESCRIPTION = "Observed right ascension hours (B1950) of the asteroid." UNIT = "HOUR" DATA_TYPE = ASCII_INTEGER START_BYTE = 73 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = "OBSERVED RA MINUTES" DESCRIPTION = "Observed right ascension minutes (B1950) of the asteroid." UNIT = "MINUTE" DATA_TYPE = ASCII_INTEGER START_BYTE = 76 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 NAME = "OBSERVED RA SECONDS" DESCRIPTION = "Observed right ascension seconds (1950) of the asteroid." UNIT = "SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 79 BYTES = 4 FORMAT = "F4.1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 16 NAME = "OBSERVED DEC DEGREES" DESCRIPTION = "Observed declination degrees (B1950) of the asteroid." UNIT = DEGREE DATA_TYPE = ASCII_INTEGER START_BYTE = 84 BYTES = 3 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 17 NAME = "OBSERVED DEC MINUTES" DESCRIPTION = "Observed declination minutes (B1950) of the asteroid." UNIT = "ARCMINUTE" DATA_TYPE = ASCII_INTEGER START_BYTE = 88 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 18 NAME = "OBSERVED DEC SECONDS" DESCRIPTION = "Observed declination seconds (B1950) of the asteroid." UNIT = "ARCSECOND" DATA_TYPE = ASCII_INTEGER START_BYTE = 91 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 19 NAME = "CELESTIAL TWIST ANGLE" DESCRIPTION = "Angle of rotation about the optical axis from the North counter-clockwise to the cross-scan axis." UNIT = DEGREE DATA_TYPE = ASCII_REAL START_BYTE = 94 BYTES = 5 FORMAT = "F5.1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 20 NAME = "ECLIPTIC LONGITUDE" DESCRIPTION = "Geocentric ecliptic longitude (B1950) of the asteroid." UNIT = DEGREE DATA_TYPE = ASCII_REAL START_BYTE = 100 BYTES = 8 FORMAT = "F8.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 21 NAME = "ECLIPTIC LATITUDE" DESCRIPTION = "Geocentric ecliptic latitude (B1950) of the asteroid." UNIT = DEGREE DATA_TYPE = ASCII_REAL START_BYTE = 109 BYTES = 8 FORMAT = "F8.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 22 NAME = "GALACTIC LONGITUDE" DESCRIPTION = "Geocentric galactic longitude (B1950) of the asteroid." UNIT = DEGREE DATA_TYPE = ASCII_REAL START_BYTE = 118 BYTES = 8 FORMAT = "F8.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 23 NAME = "GALACTIC LATITUDE" DESCRIPTION = "Geocentric galactic latitude (B1950) of the asteroid." UNIT = DEGREE DATA_TYPE = ASCII_REAL START_BYTE = 127 BYTES = 8 FORMAT = "F8.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 24 NAME = "PREDICTED RA HOURS" DESCRIPTION = "Predicted right ascension hours (B1950) of the asteroid." UNIT = "HOUR" DATA_TYPE = ASCII_INTEGER START_BYTE = 136 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 25 NAME = "PREDICTED RA MINUTES" DESCRIPTION = "Predicted right ascension minutes (B1950) of the asteroid." UNIT = "MINUTE" DATA_TYPE = ASCII_INTEGER START_BYTE = 139 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 26 NAME = "PREDICTED RA SECONDS" DESCRIPTION = "Predicted right ascension seconds (B1950) of the asteroid." UNIT = "SECOND" DATA_TYPE = ASCII_REAL START_BYTE = 142 BYTES = 4 FORMAT = "F4.1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 27 NAME = "PREDICTED DEC DEGREES" DESCRIPTION = "Predicted declination degrees (B1950) of the asteroid." UNIT = DEGREE DATA_TYPE = ASCII_INTEGER START_BYTE = 147 BYTES = 3 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 28 NAME = "PREDICTED DEC MINUTES" DESCRIPTION = "Predicted declination minutes (B1950) of the asteroid." UNIT = "ARCMINUTE" DATA_TYPE = ASCII_INTEGER START_BYTE = 151 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 29 NAME = "PREDICTED DEC SECONDS" DESCRIPTION = "Predicted declination seconds (B1950) of the asteroid." UNIT = "ARCSECOND" DATA_TYPE = ASCII_INTEGER START_BYTE = 154 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 30 NAME = "IN SCAN UNCERTAINTY" DESCRIPTION = "1-sigma positional uncertainty in the in-scan direction." UNIT = "ARCMINUTE" DATA_TYPE = ASCII_REAL START_BYTE = 157 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 31 NAME = "CROSS SCAN UNCERTAINTY" DESCRIPTION = "1-sigma Gaussian positional uncertainty in the cross-scan direction." UNIT = "ARCMINUTE" DATA_TYPE = ASCII_REAL START_BYTE = 163 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 32 NAME = "CROSS SCAN HALF WIDTH" DESCRIPTION = "Cross-scan uniform position uncertainty (half-width)." UNIT = "ARCMINUTE" DATA_TYPE = ASCII_REAL START_BYTE = 169 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 33 NAME = "POSITION SCORE" DESCRIPTION = "The position match score is a parameter correlated with the difference between the predicted and observed positions of the asteroid. It is the cross-covariance of the two position probability density functions (for the observed and computed asteroid positions) evaluated at the observed separation and assuming a single one-sigma positional uncertainty of 10 arc-seconds for the computed positions (see TEDESCOETAL1992, p. 137). Acceptance required a result to be above 1000 (the density funcitons had units of probability mass per sterradian). The units employed in the position probability density functions resulted in the figure of merit having a large value (1000 up to as much as one billion). The corresponding figure of merit used subsequently was obtained by taking the common logarithm of the cross-covariance figure of merit, subtracting three, and dividing by 6. This resulted in a number between zero and one (MATSON1986, p. 6-16). Associations with scores poorer than 0.4 are rejected (TEDESCOETAL1992, p. 88)." DATA_TYPE = ASCII_REAL START_BYTE = 175 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 34 NAME = "POSITION DIFFERENCE" DESCRIPTION = "The difference between the predicted and observed positions (predicted - observed) in arcseconds." UNIT = "ARCSECOND" DATA_TYPE = ASCII_REAL START_BYTE = 181 BYTES = 5 FORMAT = "F5.1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 35 NAME = "12 MICRON ALBEDO" DESCRIPTION = "Derived visual albedo in the 12 micron band." DATA_TYPE = ASCII_REAL START_BYTE = 187 BYTES = 6 FORMAT = "F6.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 36 NAME = "12 MICRON ALBEDO UNCERTAINTY" DESCRIPTION = "1-sigma uncertainty in derived visual albedo in the 12 micron band. This is arrived at by adding the one-sigma flux uncertainty to the flux, rederiving the albedo and taking the absolute value of its difference with the unperturbed value (TEDESCOETAL1988, p. 39)." DATA_TYPE = ASCII_REAL START_BYTE = 194 BYTES = 6 FORMAT = "F6.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 37 NAME = "25 MICRON ALBEDO" DESCRIPTION = "Derived visual albedo in the 25 micron band, then multiplied by 1.12 to bring into statistical agreement with 12 micron derived albedos (see TEDESCOETAL1992, p. 141 ff)." DATA_TYPE = ASCII_REAL START_BYTE = 201 BYTES = 6 FORMAT = "F6.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 38 NAME = "25 MICRON ALBEDO UNCERTAINTY" DESCRIPTION = "1-sigma uncertainty in derived visual albedo in the 25 micron band. This is arrived at by adding the one-sigma flux uncertainty to the flux, rederiving the albedo and taking the absolute value of its difference with the unperturbed value (TEDESCOETAL1988, p. 39)." DATA_TYPE = ASCII_REAL START_BYTE = 208 BYTES = 6 FORMAT = "F6.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 39 NAME = "60 MICRON ALBEDO" DESCRIPTION = "Derived visual albedo in the 60 micron band, then multiplied by 1.12 to bring into statistical agreement with 12 micron derived albedos (see TEDESCOETAL1992, p. 141 ff)." DATA_TYPE = ASCII_REAL START_BYTE = 215 BYTES = 6 FORMAT = "F6.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 40 NAME = "60 MICRON ALBEDO UNCERTAINTY" DESCRIPTION = "1-sigma uncertainty in derived visual albedo in the 60 micron band. This is arrived at by adding the one-sigma flux uncertainty to the flux, rederiving the albedo and taking the absolute value of its difference with the unperturbed value (TEDESCOETAL1988, p. 39)." DATA_TYPE = ASCII_REAL START_BYTE = 222 BYTES = 6 FORMAT = "F6.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 41 NAME = "100 MICRON ALBEDO" DESCRIPTION = "Derived visual albedo in the 100 micron band, then multiplied by 1.12." DATA_TYPE = ASCII_REAL START_BYTE = 229 BYTES = 6 FORMAT = "F6.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 42 NAME = "100 MICRON ALBEDO UNCERTAINTY" DESCRIPTION = "1-sigma uncertainty in derived visual albedo in the 100 micron band. This is arrived at by adding the one-sigma flux uncertainty to the flux, rederiving the albedo and taking the absolute value of its difference with the unperturbed value (TEDESCOETAL1988, p. 39)." DATA_TYPE = ASCII_REAL START_BYTE = 236 BYTES = 6 FORMAT = "F6.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 43 NAME = "12 MICRON DIAMETER" DESCRIPTION = "Derived diameter in the 12 micron band." UNIT = KILOMETER DATA_TYPE = ASCII_REAL START_BYTE = 243 BYTES = 7 FORMAT = "F7.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 44 NAME = "12 MICRON DIAMETER UNCERTAINTY" DESCRIPTION = "1-sigma uncertainty in derived diameter in the 12 micron band. This is arrived at by adding the one-sigma flux uncertainty to the flux, rederiving the diameter and taking the absolute value of its difference with the unperturbed value (TEDESCOETAL1988, p. 39)." UNIT = KILOMETER DATA_TYPE = ASCII_REAL START_BYTE = 251 BYTES = 5 FORMAT = "F5.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 45 NAME = "25 MICRON DIAMETER" DESCRIPTION = "Derived diameter in the 25 micron band." UNIT = KILOMETER DATA_TYPE = ASCII_REAL START_BYTE = 257 BYTES = 6 FORMAT = "F6.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 46 NAME = "25 MICRON DIAMETER UNCERTAINTY" DESCRIPTION = "1-sigma uncertainty in derived diameter in the 25 micron band. This is arrived at by adding the one-sigma flux uncertainty to the flux, rederiving the diameter and taking the absolute value of its difference with the unperturbed value (TEDESCOETAL1988, p. 39)." UNIT = KILOMETER DATA_TYPE = ASCII_REAL START_BYTE = 264 BYTES = 5 FORMAT = "F5.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 47 NAME = "60 MICRON DIAMETER" DESCRIPTION = "Derived diameter in the 60 micron band." UNIT = KILOMETER DATA_TYPE = ASCII_REAL START_BYTE = 270 BYTES = 6 FORMAT = "F6.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 48 NAME = "60 MICRON DIAMETER UNCERTAINTY" DESCRIPTION = "1-sigma uncertainty in derived diameter in the 60 micron band. This is arrived at by adding the one-sigma flux uncertainty to the flux, rederiving the diameter and taking the absolute value of its difference with the unperturbed value (TEDESCOETAL1988, p. 39)." UNIT = KILOMETER DATA_TYPE = ASCII_REAL START_BYTE = 277 BYTES = 5 FORMAT = "F5.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 49 NAME = "100 MICRON DIAMETER" DESCRIPTION = "Derived diameter in the 100 micron band." UNIT = KILOMETER DATA_TYPE = ASCII_REAL START_BYTE = 283 BYTES = 7 FORMAT = "F7.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 50 NAME = "100 MICRON DIAMETER UNCERTAINTY" DESCRIPTION = "1-sigma uncertainty in derived diameter in the 100 micron band. This is arrived at by adding the one-sigma flux uncertainty to the flux, rederiving the diameter and taking the absolute value of its difference with the unperturbed value (TEDESCOETAL1988, p. 39)." UNIT = KILOMETER DATA_TYPE = ASCII_REAL START_BYTE = 291 BYTES = 6 FORMAT = "F6.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 51 NAME = "HELIOCENTRIC DISTANCE" DESCRIPTION = "Heliocentric distance of asteroid." UNIT = "ASTRONOMICAL UNIT" DATA_TYPE = ASCII_REAL START_BYTE = 298 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 52 NAME = "GEOCENTRIC DISTANCE" DESCRIPTION = "Geocentric distance of asteroid." UNIT = "ASTRONOMICAL UNIT" DATA_TYPE = ASCII_REAL START_BYTE = 304 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 53 NAME = "PHASE ANGLE" DESCRIPTION = "Phase angle of asteroid (negative before opposition)." UNIT = DEGREE DATA_TYPE = ASCII_REAL START_BYTE = 310 BYTES = 6 FORMAT = "F6.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 54 NAME = "APPARENT VISUAL MAGNITUDE" DESCRIPTION = "Predicted apparent visual magnitude of asteroid." UNIT = "MAGNITUDE" DATA_TYPE = ASCII_REAL START_BYTE = 317 BYTES = 5 FORMAT = "F5.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 55 NAME = "12 MICRON CORRECTION FACTOR" DESCRIPTION = "Flux overestimation correction factor for the 12 micron band. This is applied to all detected fluxes having signal to noise ratios between 3 and 10. The correction is linear in SNR and has a value of 0.725 at SNR=3 and a value of 1 at SNR=10. See TEDESCOETAL1992, pp. 137-142." DATA_TYPE = ASCII_REAL START_BYTE = 323 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 56 NAME = "25 MICRON CORRECTION FACTOR" DESCRIPTION = "Flux overestimation correction factor for the 25 micron band. This is applied to all detected fluxes having signal to noise ratios between 3 and 10. The correction is linear in SNR and has a value of 0.725 at SNR=3 and a value of 1 at SNR=10. See TEDESCOETAL1992, pp. 137-142." DATA_TYPE = ASCII_REAL START_BYTE = 329 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 57 NAME = "60 MICRON CORRECTION FACTOR" DESCRIPTION = "Flux overestimation correction factor for the 60 micron band. This is applied to all detected fluxes having signal to noise ratios between 3 and 10. The correction is linear in SNR and has a value of 0.725 at SNR=3 and a value of 1 at SNR=10. See TEDESCOETAL1992, pp. 137-142." DATA_TYPE = ASCII_REAL START_BYTE = 335 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 58 NAME = "100 MICRON CORRECTION FACTOR" DESCRIPTION = "Flux overestimation correction factor for the 100 micron band. This is applied to all detected fluxes having signal to noise ratios between 3 and 10. The correction is linear in SNR and has a value of 0.725 at SNR=3 and a value of 1 at SNR=10. See TEDESCOETAL1992, pp. 137-142." DATA_TYPE = ASCII_REAL START_BYTE = 341 BYTES = 5 FORMAT = "F5.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 59 NAME = "12 MICRON PREDICTED FLUX DENSITY" DESCRIPTION = "Predicted flux density in the 12 micron band." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 347 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 60 NAME = "25 MICRON PREDICTED FLUX DENSITY" DESCRIPTION = "Predicted flux density in the 25 micron band." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 355 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 61 NAME = "60 MICRON PREDICTED FLUX DENSITY" DESCRIPTION = "Predicted flux density in the 60 micron band." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 363 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 62 NAME = "100 MICRON PREDICTED FLUX DENSITY" DESCRIPTION = "Predicted flux density in the 100 micron band." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 371 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 63 NAME = "12 MICRON SNR" DESCRIPTION = "Signal-to-noise ratio in the 12 micron band." DATA_TYPE = ASCII_REAL START_BYTE = 379 BYTES = 6 FORMAT = "F6.1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 64 NAME = "25 MICRON SNR" DESCRIPTION = "Signal-to-noise ratio in the 25 micron band." DATA_TYPE = ASCII_REAL START_BYTE = 386 BYTES = 6 FORMAT = "F6.1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 65 NAME = "60 MICRON SNR" DESCRIPTION = "Signal-to-noise ratio in the 60 micron band." DATA_TYPE = ASCII_REAL START_BYTE = 393 BYTES = 6 FORMAT = "F6.1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 66 NAME = "100 MICRON SNR" DESCRIPTION = "Signal-to-noise ratio in the 100 micron band." DATA_TYPE = ASCII_REAL START_BYTE = 400 BYTES = 6 FORMAT = "F6.1" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 67 NAME = "12 MICRON OBSERVED FLUX DENSITY" DESCRIPTION = "Observed flux density in the 12 micron band. Corrected by 12_MICRON_CORRECTION_FACTOR if 3<12_MICRON_SNR<10." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 407 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 68 NAME = "12 MICRON FLUX DENSITY SIGMA" DESCRIPTION = "1-sigma uncertainty in observed flux density in the 12 micron band. The flux uncertainty was increased by root-sum squaring it with the flux correction (TEDESCOETAL1992, p. 140)." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 415 BYTES = 6 FORMAT = "F6.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 69 NAME = "25 MICRON OBSERVED FLUX DENSITY" DESCRIPTION = "Observed flux density in the 25 micron band. Corrected by 25_MICRON_CORRECTION_FACTOR if 3<25_MICRON_SNR<10." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 422 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 70 NAME = "25 MICRON FLUX DENSITY SIGMA" DESCRIPTION = "1-sigma uncertainty in observed flux density in the 25 micron band. The flux uncertainty was increased by root-sum squaring it with the flux correction (TEDESCOETAL1992, p. 140)." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 430 BYTES = 6 FORMAT = "F6.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 71 NAME = "60 MICRON OBSERVED FLUX DENSITY" DESCRIPTION = "Observed flux density in the 60 micron band. Corrected by 60_MICRON_CORRECTION_FACTOR if 3<60_MICRON_SNR<10." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 437 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 72 NAME = "60 MICRON FLUX DENSITY SIGMA" DESCRIPTION = "1-sigma uncertainty in observed flux density in the 60 micron band. The flux uncertainty was increased by root-sum squaring it with the flux correction (TEDESCOETAL1992, p. 140). Note: The presence of infrared cirrus at 60 microns raises the possibility of contamination of asteroid flux density. The presence of underlying cirrus should be determined from IRAS scan or image products." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 445 BYTES = 6 FORMAT = "F6.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 73 NAME = "100 MICRON OBSERVED FLUX DENSITY" DESCRIPTION = "Observed flux density in the 100 micron band. Corrected by 100_MICRON_CORRECTION_FACTOR if 3<100_MICRON_SNR<10. Note: The presence of infrared cirrus at 100 microns was so frequently observed that the possibility of contamination of asteroid flux density is significant. The presence of underlying cirrus should be determined from IRAS scan or image products before utilizing this flux density." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 452 BYTES = 7 FORMAT = "F7.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 74 NAME = "100 MICRON FLUX DENSITY SIGMA" DESCRIPTION = "1-sigma uncertainty in observed flux density in the 100 micron band. The flux uncertainty was increased by root-sum squaring it with the flux correction (TEDESCOETAL1992, p. 140)." UNIT = "JANSKY" DATA_TYPE = ASCII_REAL START_BYTE = 460 BYTES = 6 FORMAT = "F6.3" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 75 NAME = "12 MICRON DETECTOR ID ARRAY" DESCRIPTION = "This is an encoded version of which 12 micron detectors were crossed by the source. To decode these values, the decimal value is first converted to binary, then padded with leading zeroes until it is fifteen digits long. Next this binary number is parsed into three five-digit numbers, each of which are converted back into decimal, and all of which will have values between 1 and 16. These are then converted to DETECTOR_ID values (see FPA.TAB) using the table below from BEICHMANETAL1988 (p. X-25). In-band detector DETECTOR_ID number 1 23 2 24 3 25 4 26 5 27 6 28 7 29 8 30 9 47 10 48 11 49 12 50 13 51 14 52 15 53 16 54 Up to three detectors can have been crossed. If only one detector was crossed, the first two of the three parsed numbers will be zero. If two detectors were crossed, then the first of the three parsed numbers will be zero. If a dead detector was crossed, it is assigned a value of zero. Detectors are identified from left to right in the order in which they were crossed by the source. For further information about the detectors of the IRAS Focal Plane Array see FPA.LBL." DATA_TYPE = ASCII_INTEGER START_BYTE = 467 BYTES = 4 FORMAT = I4 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 76 NAME = "12 MICRON DETECTOR ID 1" DESCRIPTION = "Uncompressing 12_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 12 micron detector crossed by the source. If only one or two detectors were crossed or three detectors were crossed, of which at least one was dead, this value will be zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 472 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 77 NAME = "12 MICRON DETECTOR ID 2" DESCRIPTION = "Uncompressing 12_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 12 micron detector crossed by the source. If only one detector was crossed or two or three detectors were crossed, of which only one was not dead, this value will be zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 475 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 78 NAME = "12 MICRON DETECTOR ID 3" DESCRIPTION = "Uncompressing 12_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 12 micron detector crossed by the source." DATA_TYPE = ASCII_INTEGER START_BYTE = 478 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 79 NAME = "25 MICRON DETECTOR ID ARRAY" DESCRIPTION = "This is an encoded version of which 25 micron detectors were crossed by the source. To decode these values, the decimal value is first converted to binary, then padded with leading zeroes until it is fifteen digits long. Next this binary number is parsed into three five-digit numbers, each of which are converted back into decimal, and all of which will have values between 1 and 16. These are then converted to DETECTOR_ID values (see fpa.tab) using the table below from BEICHMANETAL1988 (p. X-25). In-band detector DETECTOR_ID number 1 16 2 17 3 18 4 19 5 20 6 21 7 22 8 39 9 40 10 41 11 42 12 43 13 44 14 45 15 46 16 00 Up to three detectors can have been crossed. If only one detector was crossed, the first two of the three parsed numbers will be zero. If two detectors were crossed, then the first of the three parsed numbers will be zero. If a dead detector was crossed, it is assigned a value of zero. Detectors are identified from left to right in the order in which they were crossed by the source. For further information about the detectors of the IRAS Focal Plane Array see FPA.LBL." DATA_TYPE = ASCII_INTEGER START_BYTE = 481 BYTES = 4 FORMAT = I4 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 80 NAME = "25 MICRON DETECTOR ID 1" DESCRIPTION = "Uncompressing 25_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 25 micron detector crossed by the source. If only one or two detectors were crossed or three detectors were crossed, of which at least one was dead, this value will be zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 486 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 81 NAME = "25 MICRON DETECTOR ID 2" DESCRIPTION = "Uncompressing 25_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 25 micron detector crossed by the source. If only one detector was crossed or two or three detectors were crossed, of which only one was not dead, this value will be zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 489 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 82 NAME = "25 MICRON DETECTOR ID 3" DESCRIPTION = "Uncompressing 25_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 25 micron detector crossed by the source." DATA_TYPE = ASCII_INTEGER START_BYTE = 492 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 83 NAME = "60 MICRON DETECTOR ID ARRAY" DESCRIPTION = "This is an encoded version of which 60 micron detectors were crossed by the source. To decode these values, the decimal value is first converted to binary, then padded with leading zeroes until it is fifteen digits long. Next this binary number is parsed into three five-digit numbers, each of which are converted back into decimal, and all of which will have values between 1 and 16. These are then converted to DETECTOR_ID values (see fpa.tab) using the table below from BEICHMANETAL1988 (p. X-25). In-band detector DETECTOR_ID number 1 8 2 9 3 10 4 11 5 12 6 13 7 14 8 15 9 31 10 32 11 33 12 34 13 35 14 36 15 37 16 38 Up to three detectors can have been crossed. If only one detector was crossed, the first two of the three parsed numbers will be zero. If two detectors were crossed, then the first of the three parsed numbers will be zero. If a dead detector was crossed, it is assigned a value of zero. Detectors are identified from left to right in the order in which they were crossed by the source. For further information about the detectors of the IRAS Focal Plane Array see FPA.LBL." DATA_TYPE = ASCII_INTEGER START_BYTE = 495 BYTES = 4 FORMAT = I4 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 84 NAME = "60 MICRON DETECTOR ID 1" DESCRIPTION = "Uncompressing 60_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 60 micron detector crossed by the source. If only one or two detectors were crossed or three detectors were crossed, of which at least one was dead, this value will be zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 500 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 85 NAME = "60 MICRON DETECTOR ID 2" DESCRIPTION = "Uncompressing 60_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 60 micron detector crossed by the source. If only one detector was crossed or two or three detectors were crossed, of which only one was not dead, this value will be zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 503 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 86 NAME = "60 MICRON DETECTOR ID 3" DESCRIPTION = "Uncompressing 60_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 60 micron detector crossed by the source." DATA_TYPE = ASCII_INTEGER START_BYTE = 506 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 87 NAME = "100 MICRON DETECTOR ID ARRAY" DESCRIPTION = "This is an encoded version of which 100 micron detectors were crossed by the source. To decode these values, the decimal value is first converted to binary, then padded with leading zeroes until it is fifteen digits long. Next this binary number is parsed into three five-digit numbers, each of which are converted back into decimal, and all of which will have values between 1 and 16. These are then converted to DETECTOR_ID values (see fpa.tab) using the table below from BEICHMANETAL1988 (p. X-25). In-band detector DETECTOR_ID number 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 55 9 56 10 57 11 58 12 59 13 60 14 61 15 62 16 00 Up to three detectors can have been crossed. If only one detector was crossed, the first two of the three parsed numbers will be zero. If two detectors were crossed, then the first of the three parsed numbers will be zero. If a dead detector was crossed, it is assigned a value of zero. Detectors are identified from left to right in the order in which they were crossed by the source. For further information about the detectors of the IRAS Focal Plane Array see FPA.LBL." DATA_TYPE = ASCII_INTEGER START_BYTE = 509 BYTES = 4 FORMAT = I4 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 88 NAME = "100 MICRON DETECTOR ID 1" DESCRIPTION = "Uncompressing 100_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 100 micron detector crossed by the source. If only one or two detectors were crossed or three detectors were crossed, of which at least one was dead, this value will be zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 514 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 89 NAME = "100 MICRON DETECTOR ID 2" DESCRIPTION = "Uncompressing 100_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 100 micron detector crossed by the source. If only one detector was crossed or two or three detectors were crossed, of which only one was not dead, this value will be zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 516 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 90 NAME = "100 MICRON DETECTOR ID 3" DESCRIPTION = "Uncompressing 100_MICRON_DETECTOR_ID_ARRAY, this is the DETECTOR_ID of a 100 micron detector crossed by the source." DATA_TYPE = ASCII_INTEGER START_BYTE = 519 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 91 NAME = "12 MICRON CORRELATION COEFFICIENT" DESCRIPTION = "For each candidate peak (exceeding 2.5 times the rms noise of a given detector) an 11-point template, corresponding to the point spread function, was fit to the data and the correlation coefficient was calculated. Peaks with an amplitude above 3.0 times the noise and a correlation coefficient greater than 0.87 were passed as valid detections. The 12_MICRON_CORRELATION_COEFFICIENT is the maximum of that value over all detections in a given band in a given scan, multiplied by 100." DATA_TYPE = ASCII_INTEGER START_BYTE = 522 BYTES = 3 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 92 NAME = "25 MICRON CORRELATION COEFFICIENT" DESCRIPTION = "For each candidate peak (exceeding 2.5 times the rms noise of a given detector) an 11-point template, corresponding to the point spread function, was fit to the data and the correlation coefficient was calculated. Peaks with an amplitude above 3.0 times the noise and a correlation coefficient greater than 0.87 were passed as valid detections. The 25_MICRON_CORRELATION_COEFFICIENT is the maximum of that value over all detections in a given band in a given scan, multiplied by 100." DATA_TYPE = ASCII_INTEGER START_BYTE = 526 BYTES = 3 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 93 NAME = "60 MICRON CORRELATION COEFFICIENT" DESCRIPTION = "For each candidate peak (exceeding 2.5 times the rms noise of a given detector) an 11-point template, corresponding to the point spread function, was fit to the data and the correlation coefficient was calculated. Peaks with an amplitude above 3.0 times the noise and a correlation coefficient greater than 0.87 were passed as valid detections. The 60_MICRON_CORRELATION_COEFFICIENT is the maximum of that value over all detections in a given band in a given scan, multiplied by 100." DATA_TYPE = ASCII_INTEGER START_BYTE = 530 BYTES = 3 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 94 NAME = "100 MICRON CORRELATION COEFFICIENT" DESCRIPTION = "For each candidate peak (exceeding 2.5 times the rms noise of a given detector) an 11-point template, corresponding to the point spread function, was fit to the data and the correlation coefficient was calculated. Peaks with an amplitude above 3.0 times the noise and a correlation coefficient greater than 0.87 were passed as valid detections. The 100_MICRON_CORRELATION_COEFFICIENT is the maximum of that value over all detections in a given band in a given scan, multiplied by 100." DATA_TYPE = ASCII_INTEGER START_BYTE = 534 BYTES = 3 FORMAT = I3 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 95 NAME = "12 MICRON DERIVED STATUS WORD 4" DESCRIPTION = "Set to 1 if a flux overestimation correction was applied." DATA_TYPE = ASCII_INTEGER START_BYTE = 538 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 96 NAME = "12 MICRON DERIVED STATUS WORD 7" DESCRIPTION = "Set to 1 if the albedo derived from this observation was rejected from final average using Chauvenet's criterion." DATA_TYPE = ASCII_INTEGER START_BYTE = 540 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 97 NAME = "12 MICRON DERIVED STATUS WORD 8" DESCRIPTION = "Set to 1 if the albedo calculation did not converge after 100 iterations." DATA_TYPE = ASCII_INTEGER START_BYTE = 542 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 98 NAME = "25 MICRON DERIVED STATUS WORD 4" DESCRIPTION = "Set to 1 if a flux overestimation correction was applied." DATA_TYPE = ASCII_INTEGER START_BYTE = 544 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 99 NAME = "25 MICRON DERIVED STATUS WORD 7" DESCRIPTION = "Set to 1 if the albedo derived from this observation was rejected from final average using Chauvenet's criterion." DATA_TYPE = ASCII_INTEGER START_BYTE = 546 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 100 NAME = "60 MICRON DERIVED STATUS WORD 4" DESCRIPTION = "Set to 1 if a flux overestimation correction was applied." DATA_TYPE = ASCII_INTEGER START_BYTE = 548 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 101 NAME = "60 MICRON DERIVED STATUS WORD 7" DESCRIPTION = "Set to 1 if the albedo derived from this observation was rejected from final average using Chauvenet's criterion." DATA_TYPE = ASCII_INTEGER START_BYTE = 550 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 102 NAME = "60 MICRON DERIVED STATUS WORD 8" DESCRIPTION = "Set to 1 if the albedo calculation did not converge after 100 iterations." DATA_TYPE = ASCII_INTEGER START_BYTE = 552 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 103 NAME = "100 MICRON DERIVED STATUS WORD 4" DESCRIPTION = "Set to 1 if a flux overestimation correction was applied." DATA_TYPE = ASCII_INTEGER START_BYTE = 554 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 104 NAME = "100 MICRON DERIVED STATUS WORD 8" DESCRIPTION = "Set to 1 if the albedo calculation did not converge after 100 iterations." DATA_TYPE = ASCII_INTEGER START_BYTE = 556 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 105 NAME = "12 MICRON CONFUSION STATUS WORD 1" DESCRIPTION = "Edge detection or possible confusion diagnosed. Set to 1 when two or more detectors in the first band module crossing a celestial position register detections and is seconds confirmed. If set to zero, then 12_MICRON_CONFUSION_STATUS_WORD_2, 12_MICRON_CONFUSION_STATUS_WORD_3, and 12_MICRON_CONFUSION_STATUS_WORD_7 must also be zero. In the original released IMPS data product, this was the 1st bit from right to left of an 8 bit '12 micron confusion status word' of which bits 5,6 and 8 were not used and always zero. " DATA_TYPE = ASCII_INTEGER START_BYTE = 558 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 106 NAME = "12 MICRON CONFUSION STATUS WORD 2" DESCRIPTION = "Edge detection (3 sources involved). Set to 1 when an examination of the fluxes is consistent with a single source traversing two adjacent detectors in one band module and a single detector along the scan path in the second band module (See BEICHMANETAL1988, p. V-19). In the original released IMPS data product, this was the 2nd bit from right to left of an 8 bit '12 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 560 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 107 NAME = "12 MICRON CONFUSION STATUS WORD 3" DESCRIPTION = "Believed to be confused at seconds confirmation and confusion recovery steps were taken. Set to 1 if an examination of the fluxes is not consistent with a single source traversing three detectors in the two detector modules of the band, and a multiple source event can be successfully reconstructed (see BEICHMANETAL1988, p. V-19). In the original released IMPS data product, this was the 3rd bit from right to left of an 8 bit '12 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 562 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 108 NAME = "12 MICRON CONFUSION STATUS WORD 4" DESCRIPTION = "Possible confusion at band merging; best position agreement used. Set to 1 when seconds-confirming detections across more than one band yield source positions inconsistent with an intertially fixed source traversing the focal plane array, or when more than one source is detected in another band. In the original released IMPS data product, this was the 4th bit from right to left of an 8 bit '12 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 564 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 109 NAME = "25 MICRON CONFUSION STATUS WORD 1" DESCRIPTION = "Edge detection or possible confusion diagnosed. Set to 1 when two or more detectors in the first band module crossing a celestial position register detections and is seconds confirmed. If set to zero, then 25_MICRON_CONFUSION_STATUS_WORD_2, 25_MICRON_CONFUSION_STATUS_WORD_3, and 25_MICRON_CONFUSION_STATUS_WORD_7 must also be zero. In the original released IMPS data product, this was the 1st bit from right to left of an 8 bit '25 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 566 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 110 NAME = "25 MICRON CONFUSION STATUS WORD 2" DESCRIPTION = "Edge detection (3 sources involved). Set to 1 when an examination of the fluxes is consistent with a single source traversing two adjacent detectors in one band module and a single detector along the scan path in the second band module (See BEICHMANETAL1988, p. V-19). In the original released IMPS data product, this was the 2nd bit from right to left of an 8 bit '25 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 568 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 111 NAME = "25 MICRON CONFUSION STATUS WORD 3" DESCRIPTION = "Believed to be confused at seconds confirmation and confusion recovery steps were taken. Set to 1 if an examination of the fluxes is not consistent with a single source traversing three detectors in the two detector modules of the band, and a multiple source event can be successfully reconstructed (see BEICHMANETAL1988, p. V-19). In the original released IMPS data product, this was the 3rd bit from right to left of an 8 bit '25 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 570 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 112 NAME = "25 MICRON CONFUSION STATUS WORD 4" DESCRIPTION = "Possible confusion at band merging; best position agreement used. Set to 1 when seconds-confirming detections across more than one band yield source positions inconsistent with an intertially fixed source traversing the focal plane array, or when more than one source is detected in another band. In the original released IMPS data product, this was the 4th bit from right to left of an 8 bit '25 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 572 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 113 NAME = "60 MICRON CONFUSION STATUS WORD 1" DESCRIPTION = "Edge detection or possible confusion diagnosed. Set to 1 when two or more detectors in the first band module crossing a celestial position register detections and is seconds confirmed. If set to zero, then 60_MICRON_CONFUSION_STATUS_WORD_2, 60_MICRON_CONFUSION_STATUS_WORD_3, and 60_MICRON_CONFUSION_STATUS_WORD_7 must also be zero. In the original released IMPS data product, this was the 1st bit from right to left of an 8 bit '60 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 574 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 114 NAME = "60 MICRON CONFUSION STATUS WORD 2" DESCRIPTION = "Edge detection (3 sources involved). Set to 1 when an examination of the fluxes is consistent with a single source traversing two adjacent detectors in one band module and a single detector along the scan path in the second band module (See BEICHMANETAL1988, p. V-19). In the original released IMPS data product, this was the 2nd bit from right to left of an 8 bit '60 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 576 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 115 NAME = "60 MICRON CONFUSION STATUS WORD 3" DESCRIPTION = "Believed to be confused at seconds confirmation and confusion recovery steps were taken. Set to 1 if an examination of the fluxes is not consistent with a single source traversing three detectors in the two detector modules of the band, and a multiple source event can be successfully reconstructed (see BEICHMANETAL1988, p. V-19). In the original released IMPS data product, this was the 3rd bit from right to left of an 8 bit '60 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 578 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 116 NAME = "60 MICRON CONFUSION STATUS WORD 4" DESCRIPTION = "Possible confusion at band merging; best position agreement used. Set to 1 when seconds-confirming detections across more than one band yield source positions inconsistent with an intertially fixed source traversing the focal plane array, or when more than one source is detected in another band. In the original released IMPS data product, this was the 4th bit from right to left of an 8 bit '60 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 580 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 117 NAME = "100 MICRON CONFUSION STATUS WORD 1" DESCRIPTION = "Edge detection or possible confusion diagnosed. Set to 1 when two or more detectors in the first band module crossing a celestial position register detections and is seconds confirmed. If set to zero, then 100_MICRON_CONFUSION_STATUS_WORD_2, 100_MICRON_CONFUSION_STATUS_WORD_3, and 100_MICRON_CONFUSION_STATUS_WORD_7 must also be zero. In the original released IMPS data product, this was the 1st bit from right to left of an 8 bit '100 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 582 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 118 NAME = "100 MICRON CONFUSION STATUS WORD 2" DESCRIPTION = "Edge detection (3 sources involved). Set to 1 when an examination of the fluxes is consistent with a single source traversing two adjacent detectors in one band module and a single detector along the scan path in the second band module (See BEICHMANETAL1988, p. V-19). In the original released IMPS data product, this was the 2nd bit from right to left of an 8 bit '100 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 584 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 119 NAME = "100 MICRON CONFUSION STATUS WORD 3" DESCRIPTION = "Believed to be confused at seconds confirmation and confusion recovery steps were taken. Set to 1 if an examination of the fluxes is not consistent with a single source traversing three detectors in the two detector modules of the band, and a multiple source event can be successfully reconstructed (see BEICHMANETAL1988, p. V-19). In the original released IMPS data product, this was the 3rd bit from right to left of an 8 bit '100 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 586 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 120 NAME = "100 MICRON CONFUSION STATUS WORD 4" DESCRIPTION = "Possible confusion at band merging; best position agreement used. Set to 1 when seconds-confirming detections across more than one band yield source positions inconsistent with an intertially fixed source traversing the focal plane array, or when more than one source is detected in another band. In the original released IMPS data product, this was the 4th bit from right to left of an 8 bit '100 micron confusion status word' of which bits 5,6 and 8 were not used and always zero." DATA_TYPE = ASCII_INTEGER START_BYTE = 588 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 121 NAME = "12 MICRON FLUX STATUS WORD" DESCRIPTION = "The flux status word indicates a level of reliability of detection of a source in a given band. The most reliable detection (FSTAT=5) is one in which a source is detected with high S/N in both 12-micron detector modules along the inscan path. 1 Detection assuming 3 sigma noise upper limit. Assigned if a more reliable detection is made in another band. 2 Low signal to noise (2.9 < S/N < 5) detection in at least one in-band detector module. 3 Non-seconds-confirmed detection (NSC). A source was detected by one or two (in the case of edge-detections) detectors within an in-band detector module, but was not detected by the corresponding detector along the inscan path in the other module of the same band. This assumes all compatible redundant detectors are operational. 4 A non-seconds-confirmed detection (NSCF) which may have been due to a dead or degraded detector in the redundant color-band module. 5 Seconds-confirmed detection." DATA_TYPE = ASCII_INTEGER START_BYTE = 590 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 122 NAME = "25 MICRON FLUX STATUS WORD" DESCRIPTION = "The flux status word indicates a level of reliability of detection of a source in a given band. The most reliable detection (FSTAT=5) is one in which a source is detected with high S/N in both 25-micron detector modules along the inscan path. 1 Detection assuming 3 sigma noise upper limit. Assigned if a more reliable detection is made in another band. 2 Low signal to noise (2.9 < S/N < 5) detection in at least one in-band detector module. 3 Non-seconds-confirmed detection (NSC). A source was detected by one or two (in the case of edge-detections) detectors within an in-band detector module, but was not detected by the corresponding detector along the inscan path in the other module of the same band. This assumes all compatible redundant detectors are operational. 4 A non-seconds-confirmed detection (NSCF) which may have been due to a dead or degraded detector in the redundant color-band module. 5 Seconds-confirmed detection." DATA_TYPE = ASCII_INTEGER START_BYTE = 592 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 123 NAME = "60 MICRON FLUX STATUS WORD" DESCRIPTION = "The flux status word indicates a level of reliability of detection of a source in a given band. The most reliable detection (FSTAT=5) is one in which a source is detected with high S/N in both 60-micron detector modules along the inscan path. 1 Detection assuming 3 sigma noise upper limit. Assigned if a more reliable detection is made in another band. 2 Low signal to noise (2.9 < S/N < 5) detection in at least one in-band detector module. 3 Non-seconds-confirmed detection (NSC). A source was detected by one or two (in the case of edge-detections) detectors within an in-band detector module, but was not detected by the corresponding detector along the inscan path in the other module of the same band. This assumes all compatible redundant detectors are operational. 4 A non-seconds-confirmed detection (NSCF) which may have been due to a dead or degraded detector in the redundant color-band module. 5 Seconds-confirmed detection." DATA_TYPE = ASCII_INTEGER START_BYTE = 594 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 124 NAME = "100 MICRON FLUX STATUS WORD" DESCRIPTION = "The flux status word indicates a level of reliability of detection of a source in a given band. The most reliable detection (FSTAT=5) is one in which a source is detected with high S/N in both 100-micron detector modules along the inscan path. 1 Detection assuming 3 sigma noise upper limit. Assigned if a more reliable detection is made in another band. 2 Low signal to noise (2.9 < S/N < 5) detection in at least one in-band detector module. 3 Non-seconds-confirmed detection (NSC). A source was detected by one or two (in the case of edge-detections) detectors within an in-band detector module, but was not detected by the corresponding detector along the inscan path in the other module of the same band. This assumes all compatible redundant detectors are operational. 4 A non-seconds-confirmed detection (NSCF) which may have been due to a dead or degraded detector in the redundant color-band module. 5 Seconds-confirmed detection." DATA_TYPE = ASCII_INTEGER START_BYTE = 596 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 125 NAME = "ASTEROID STATUS WORD 01" DESCRIPTION = "Low position score. This flag is set to unity when the difference between the predicted and the observed positions for an asteroid's association is deemed significant (POSITION_SCORE<0.5) (TEDESCOETAL1992, p. 88)." DATA_TYPE = ASCII_INTEGER START_BYTE = 598 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 126 NAME = "ASTEROID STATUS WORD 02" DESCRIPTION = "ADAS type 1 accept. Set for all sightings of an asteroid with ASTEROID_ID value less than 3318 which was accepted in the Asteroid Data Analysis Subsystem (see MATSON1986)." DATA_TYPE = ASCII_INTEGER START_BYTE = 600 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 127 NAME = "ASTEROID STATUS WORD 03" DESCRIPTION = "ADAS type 1 reject. Set for all sightings of an asteroid with ASTEROID_ID value less than 3318 which was rejected in the Asteroid Data Analysis Subsystem (see MATSON1986)." DATA_TYPE = ASCII_INTEGER START_BYTE = 602 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 128 NAME = "ASTEROID STATUS WORD 04" DESCRIPTION = "WSDB HCON position match. Set for an hours confirmed asteroid sighting, which was not confirmed when the position was scanned weeks or months later (hence rejected from the IRAS Working Survey Data Base - see MATSON1986)." DATA_TYPE = ASCII_INTEGER START_BYTE = 604 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 129 NAME = "ASTEROID STATUS WORD 06" DESCRIPTION = "Small scale Version 1 match. Set to indicate coincidence with resolved spatial structure. See HELOU&WALKER1986." DATA_TYPE = ASCII_INTEGER START_BYTE = 606 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 130 NAME = "ASTEROID STATUS WORD 07" DESCRIPTION = "Relative flux out of bounds. Set if the ratio of observed to predicted flux density at 25 microns is either less than 0.3 or greater than 3.0." DATA_TYPE = ASCII_INTEGER START_BYTE = 608 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 131 NAME = "ASTEROID STATUS WORD 12" DESCRIPTION = "Low detection rate FOR. Set for all sightings of each asteroid if the rate of successful detections, i.e., the fraction observed ratio FOR [(number of sightings used)/(number used plus number missed)], is less than 0.3." DATA_TYPE = ASCII_INTEGER START_BYTE = 610 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 132 NAME = "ASTEROID STATUS WORD 13" DESCRIPTION = "12 micron albedo used in the final average albedo." DATA_TYPE = ASCII_INTEGER START_BYTE = 612 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 133 NAME = "ASTEROID STATUS WORD 14" DESCRIPTION = "25 micron albedo used in the final average albedo." DATA_TYPE = ASCII_INTEGER START_BYTE = 614 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 134 NAME = "ASTEROID STATUS WORD 15" DESCRIPTION = "60 micron albedo used in the final average albedo." DATA_TYPE = ASCII_INTEGER START_BYTE = 616 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 135 NAME = "ASTEROID STATUS WORD 18" DESCRIPTION = "Accepted observation having no 25 micron flux density greater than 1 Jansky." DATA_TYPE = ASCII_INTEGER START_BYTE = 618 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 136 NAME = "ASTEROID STATUS WORD 19" DESCRIPTION = "Large albedo range. Set for all sightings of an accepted asteroid if the ratio {[max - min]/[min + max]/2} is greater than 0.75 among all derived albedos used in the final average for each asteroid. This parameter is an indicator of apparent infrared lightcurves." DATA_TYPE = ASCII_INTEGER START_BYTE = 620 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 137 NAME = "ASTEROID STATUS WORD 21" DESCRIPTION = "-10 degrees < GALACTIC_LATITUDE < 10 degrees. Set if sighting is within the galactic plane, i.e. not covered by the IRAS Faint Source Survey. See ASTEROID STATUS WORD 17." DATA_TYPE = ASCII_INTEGER START_BYTE = 622 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 138 NAME = "ASTEROID STATUS WORD 22" DESCRIPTION = "Galactic center match. Asteroid 25 micron only sightings are rejected by IMPS if near the galactic center: +/- 3 degrees latitude by +/- 10 degrees longitude. Subset of ASTEROID STATUS WORD 21." DATA_TYPE = ASCII_INTEGER START_BYTE = 624 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 139 NAME = "ASTEROID STATUS WORD 23" DESCRIPTION = "ADAS type 2 now type 1. Set if provisional asteroid elements updated and numbered since 1985." DATA_TYPE = ASCII_INTEGER START_BYTE = 626 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 140 NAME = "ASTEROID STATUS WORD 24" DESCRIPTION = "Flux correction used. Set if IMPS decreased (low) flux densities to compensate for IRAS bias near its SNR cutoff." DATA_TYPE = ASCII_INTEGER START_BYTE = 628 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 141 NAME = "ASTEROID STATUS WORD 25" DESCRIPTION = "12 micron high density. Set if sighting is within an IRAS 12 micron High Source Density Region near the galactic center. See ASTEROID STATUS WORD 26." DATA_TYPE = ASCII_INTEGER START_BYTE = 630 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 142 NAME = "ASTEROID STATUS WORD 26" DESCRIPTION = "25 micron high density. Set if sighting is within an IRAS 25 micron High Source Density Region near the galactic center. See ASTEROID STATUS WORD 25." DATA_TYPE = ASCII_INTEGER START_BYTE = 632 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 143 NAME = "ASTEROID STATUS WORD 27" DESCRIPTION = "60 micron high density. Set if sighting is within an IRAS 60 micron High Source Density Region of low galactic latitude near the center and anti-center." DATA_TYPE = ASCII_INTEGER START_BYTE = 634 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 144 NAME = "ASTEROID STATUS WORD 28" DESCRIPTION = "100 micron high density. Set if sighting is within an IRAS 100 micron High Source Density Region around the galactic center and anti-center." DATA_TYPE = ASCII_INTEGER START_BYTE = 636 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 145 NAME = "ASTEROID STATUS WORD 30" DESCRIPTION = "2+ known asteroid match. Set if sighting is associated with more than one asteroid prediction." DATA_TYPE = ASCII_INTEGER START_BYTE = 638 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN END_OBJECT = TABLE END