PDS_VERSION_ID = PDS3 /* File Characteristics */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 64 FILE_RECORDS = 7309 /* Data Object Pointers */ ^TABLE = "impsstat.tab" /* Identification Keywords */ DATA_SET_ID = "IRAS-A-FPA-3-RDR-IMPS-V3.0" PRODUCT_NAME = "IMPS Statistics File" PRODUCT_ID = "IMPS-IMPSSTAT-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 */ RECORD_FORMAT = "(a5,1x,a18,1x,a9,9(1x,i2))" /* Data Object Descriptions */ OBJECT = TABLE ROWS = 7309 ROW_BYTES = 64 INTERCHANGE_FORMAT = ASCII COLUMNS = 12 DESCRIPTION = "This dataset is the IRAS Minor Planet Survey Final Product 104, the IMPS Statistics Data Base. It presents a summary of the number of times each asteroid was predicted to be scanned, and possible reasons for any failure to ne detected. It contains entries for each of 4677 numbered asteroids and 2632 unnumbered asteroids (as of 1985) for which associations were sought in the IRAS data. Asteroids 719 Albert and 878 Mildred were still lost as of 1985 and are not included. These entries include the number of predicted sightings, number of accepted sightings, number of rejected sightings, number of missed predicted sightings, number of missed predicted faint sightings, number of dead 25 micron detector non-detections, number of noisy 25 micron detector non-detections, number of missed predictions in the galactic center region, and other non-detections. For further information regarding these data see TEDESCOETAL1992." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "ASTEROID ID" DESCRIPTION = "The IAU asteroid number designation. For unnumbered asteroids, this field is blank." DATA_TYPE = CHARACTER START_BYTE = 1 BYTES = 5 FORMAT = A5 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "ASTEROID NAME" DESCRIPTION = "IAU asteroid name. For unnamed asteroids, this field is blank." DATA_TYPE = CHARACTER START_BYTE = 7 BYTES = 18 FORMAT = A18 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "ASTEROID PROVISIONAL DESIGNATION" DESCRIPTION = "Asteroid principal provisional designation. For named asteroids, this field is blank." DATA_TYPE = CHARACTER START_BYTE = 26 BYTES = 9 FORMAT = A9 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "NUMBER PREDICTED PASSES" DESCRIPTION = "The number of times the asteroid was predicted to pass through the IRAS focal plane while the satellite was in survey mode." DATA_TYPE = ASCII_INTEGER START_BYTE = 36 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "NUMBER ACCEPTED PASSES" DESCRIPTION = "The number of times the asteroid was predicted to pass through the IRAS focal plane while the satellite was in survey mode for which there was an accepted sighting." DATA_TYPE = ASCII_INTEGER START_BYTE = 39 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "NUMBER POTENTIAL PASSES REJECTED" DESCRIPTION = "The number of times a potential asteroid sighting was later rejected. Reasons for rejection are given in the IMPS Reject File." DATA_TYPE = ASCII_INTEGER START_BYTE = 42 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "NUMBER PREDICTED PASSES MISSED" DESCRIPTION = "The number of times the asteroid was predicted to pass through the IRAS focal plane while the satellite was in survey mode for which sightings were not realized. Reasons for missing these asteroids are given in the IMPS Missed-Predictions File." DATA_TYPE = ASCII_INTEGER START_BYTE = 45 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "NUMBER PREDICTED FAINT" DESCRIPTION = "The number of times the asteroid was predicted to pass through the IRAS focal plane while the satellite was in survey mode for which, based on a priori knowledge, the asteroid was expected to be below the IRAS detection threshold." DATA_TYPE = ASCII_INTEGER START_BYTE = 48 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "NUMBER PASSES DEAD DETECTOR" DESCRIPTION = "The number of times the asteroid was predicted to pass through the IRAS focal plane while the satellite was in survey mode, but only over a dead 25 micron detector." DATA_TYPE = ASCII_INTEGER START_BYTE = 51 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = "NUMBER PASSES NOISY DETECTOR" DESCRIPTION = "The number of times the asteroid was predicted to pass through the IRAS focal plane while the satellite was in survey mode, but only over a noisy 25 micron detector." DATA_TYPE = ASCII_INTEGER START_BYTE = 54 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = "NUMBER PASSES GALACTIC CENTER" DESCRIPTION = "The number of times the asteroid was predicted to pass through the IRAS focal plane while the satellite was in survey mode within 10 degrees of the galactic center." DATA_TYPE = ASCII_INTEGER START_BYTE = 57 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = "NUMBER PASSES REJECTED OTHER" DESCRIPTION = "The number of times the asteroid was predicted to pass through the IRAS focal plane while the satellite was in survey mode, but which were not realized due to a reason other than noted above." DATA_TYPE = ASCII_INTEGER START_BYTE = 60 BYTES = 2 FORMAT = I2 END_OBJECT = COLUMN END_OBJECT = TABLE END