PDS_VERSION_ID = PDS3 /* File Characteristics */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 76 FILE_RECORDS = 85 /* Data Object Pointers */ ^TABLE = "vilindex.tab" /* Identification Keywords */ DATA_SET_ID = "EAR-A-3-RDR-VILAS-ASTEROID-SPECTRA-V1.0" PRODUCT_NAME = "Vilas Asteroid Spectra Index" PRODUCT_ID = "VILAS-VILINDEX-199803" INSTRUMENT_HOST_NAME = "N/A" INSTRUMENT_NAME = "N/A" TARGET_NAME = ASTEROID START_TIME = 1982-02-04 STOP_TIME = 1992-04-20 PRODUCT_CREATION_TIME = 1998-03-23 /* Peer Review Date */ RECORD_FORMAT = "(i5,1x,a8,1x,i4,2(1x,i2),1x,f4.1,1x,f6.2, 2(1x,i3),5(1x,f4.2),1x,a5)" /* Data Object Descriptions */ OBJECT = TABLE ROWS = 85 ROW_BYTES = 76 INTERCHANGE_FORMAT = ASCII COLUMNS = 15 DESCRIPTION = "Index to Vilas asteroid spectra, with observational circumstances for each observation." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "ASTEROID NUMBER" DATA_TYPE = ASCII_INTEGER START_BYTE = 1 BYTES = 5 FORMAT = I5 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "SPECTRUM ID" DESCRIPTION = "A unique identifier for a particular spectrum of an asteroid. This identifier is designed to be coincident with the filename of the file containing that spectrum. In cases of more than one entry for a given identifier, that file contains an average of the spectra from each of those observations. For example, there are two entries with the identifier 'henriett'. This means that the spectrum in the data file 'henriett.tab' is an average of two observations, the circumstances of which are recorded in the two entries." DATA_TYPE = CHARACTER START_BYTE = 7 BYTES = 8 FORMAT = A8 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "OBSERVATION YEAR" DESCRIPTION = "The year in which the observation was made." DATA_TYPE = ASCII_INTEGER START_BYTE = 16 BYTES = 4 FORMAT = I4 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "OBSERVATION MONTH" DESCRIPTION = "The month in which the observation was made." DATA_TYPE = ASCII_INTEGER START_BYTE = 21 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "OBSERVATION DAY" DESCRIPTION = "The day of the month on which the observation was made." DATA_TYPE = ASCII_INTEGER START_BYTE = 24 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "VISUAL MAGNITUDE" DESCRIPTION = "Apparent visual magnitude of the asteroid at the time of the observation." UNIT = "MAGNITUDE" DATA_TYPE = ASCII_REAL START_BYTE = 27 BYTES = 4 FORMAT = "F4.1" MISSING_CONSTANT = -9.9 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "INTEGRATION TIME" DESCRIPTION = "Total integration time of the observation in minutes." UNIT = "MINUTE" DATA_TYPE = ASCII_REAL START_BYTE = 32 BYTES = 5 FORMAT = "F5.1" MISSING_CONSTANT = -99.9 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "PHASE ANGLE" DESCRIPTION = "Phase angle at the time of observation, in degrees." UNIT = "DEGREE" DATA_TYPE = ASCII_REAL START_BYTE = 38 BYTES = 6 FORMAT = "F6.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "GEOCENTRIC DISTANCE" DESCRIPTION = "Geocentric distance of the asteroid at the time of observation, in AUs." UNIT = "ASTRONOMICAL UNIT" DATA_TYPE = ASCII_REAL START_BYTE = 45 BYTES = 4 FORMAT = "F4.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = "HELIOCENTRIC DISTANCE" DESCRIPTION = "Heliocentric distance of the asteroid at the time of observation, in AUs." UNIT = "ASTRONOMICAL UNIT" DATA_TYPE = ASCII_REAL START_BYTE = 50 BYTES = 4 FORMAT = "F4.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = "WAVELENGTH COVERAGE LOWER LIMIT" DESCRIPTION = "The blue limit of wavelength coverage of this spectrum." UNIT = "MICRON" DATA_TYPE = ASCII_REAL START_BYTE = 55 BYTES = 4 FORMAT = "F4.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = "WAVELENGTH COVERAGE UPPER LIMIT" DESCRIPTION = "The red limit of wavelength coverage of this spectrum." UNIT = "MICRON" DATA_TYPE = ASCII_REAL START_BYTE = 60 BYTES = 4 FORMAT = "F4.2" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 NAME = "REFERENCE CODE" DESCRIPTION = "Integer code for the reference of the publication in which this spectrum first appeared. 1 - Vilas, F., D.J. Tholen, L.A. Lebofsky, H. Campins, G. Veeder, R. Binzel, and A. Tokunaga 1985. Physical parameters of near-earth asteroid 1982 DV. Icarus 63, 201-205. 2 - Vilas, F. and B.A. Smith 1985. Reflectance spectrophotometry (0.5-1.0 microns) of outer-belt asteroids: Implications for primitive organic solar system material. Icarus 64, 503-516. 3 - Vilas, F. and L.A. McFadden 1992. CCD reflectance spectra of selected asteroids: Presentation and data analysis considerations. Icarus 100, 85-94. 4 - Vilas, F., E.C. Hatch, S.A. Larson, S.R. Sawyer and M.J. Gaffey 1993. Ferric iron in primitive asteroids: A 0.43 micron absorption feature. Icarus 102, 225-231. 5 - Vilas, F., S.A. Larson, E.C. Hatch and K.S Jarvis 1993. CCD reflectance spectra of selected asteroids. II. Low albedo asteroid spectra and data extraction techniques. Icarus 105, 67-78." DATA_TYPE = ASCII_INTEGER START_BYTE = 65 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = "TELESCOPE CODE" DESCRIPTION = "A code for the telescope and observatory where the observation was carried out. UAO - University of Arizona Catalina Station 1.54 meter telescope. CTIO1 - Cerro Tololo Interamerican Observatory 1.0 meter telescope. CTIO2 - Cerro Tololo Interamerican Observatory 1.5 meter telescope." DATA_TYPE = CHARACTER START_BYTE = 67 BYTES = 5 FORMAT = A5 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 NAME = "SOLAR ANALOG STARS" DESCRIPTION = "This integer identifies the solar analog star used in reducing this observation. Additional data about the solar analog stars used is given in the ancillary file 'vilsolar.tab. 0 - Solar star(s) not specified. 1 - 16 Cyg B 2 - SAO 66118 3 - SAO 81260 4 - SAO 120107 5 - SAO 147237 6 - SAO 159706 7 - 109 Vir " DATA_TYPE = ASCII_INTEGER START_BYTE = 73 BYTES = 1 FORMAT = I1 END_OBJECT = COLUMN END_OBJECT = TABLE END