CCSD3ZF0000100000001NJPL3IF0PDSX00000001 = SFDU PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 124 FILE_RECORDS = 47 ^TABLE = "IRPHOT3A.TAB" DATA_SET_ID = "EAR-C-IRPHOT-2-RDR-HALLEY-ADDENDA-V1.0" TARGET_NAME = "HALLEY" PRODUCT_ID = "IRPHOT3A.TAB" PRODUCT_NAME = "0.7- to 23-MICROMETER PHOTOMETRIC Observation Parameters" PRODUCT_CREATION_TIME = 1997-02-21 START_TIME = 1985-12-12 STOP_TIME = 1986-05-06 INSTRUMENT_NAME = "N/A" OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 47 COLUMNS = 20 ROW_BYTES = 124 DESCRIPTION = "This file lists the observation parameters for each of the data files referenced." NOTE = "Values of 999.9, 9.99 and 1.00E+32 indicate that the associated data were not available." OBJECT = COLUMN NAME = "OBS NUMBER" COLUMN_NUMBER = 1 DATA_TYPE = ASCII_INTEGER START_BYTE = 1 BYTES = 2 FORMAT = "I2" DESCRIPTION = " OBS NUMBER = Chronological observation number" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "UT DAY" COLUMN_NUMBER = 2 DATA_TYPE = ASCII_REAL START_BYTE = 4 BYTES = 5 FORMAT = "F5.2" DESCRIPTION = " UT DAY = UT observation day" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "UT MONTH" COLUMN_NUMBER = 3 DATA_TYPE = ASCII_INTEGER START_BYTE = 10 BYTES = 2 FORMAT = "I2" DESCRIPTION = " UT MONTH = UT observation month" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "UT YEAR" COLUMN_NUMBER = 4 DATA_TYPE = ASCII_INTEGER START_BYTE = 13 BYTES = 2 FORMAT = "I2" DESCRIPTION = " UT YEAR = Last 2 digits of the UT observation year" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "JD" COLUMN_NUMBER = 5 UNIT = "JULIAN DAYS" DATA_TYPE = ASCII_REAL START_BYTE = 16 BYTES = 7 FORMAT = "F7.2" DESCRIPTION = " JD = Julian date of the observation: 2,440,000+" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "DAYS FROM PERIHELION" COLUMN_NUMBER = 6 UNIT = "DAYs" DATA_TYPE = ASCII_REAL START_BYTE = 24 BYTES = 6 FORMAT = "F6.2" DESCRIPTION = " DAYS FROM PERIHELION = UT time of each observation in decimal days with respect to perihelion passage (t=0): negative values = pre-perihelion positive values = post-perihelion" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "OBS SYSTEM" COLUMN_NUMBER = 7 DATA_TYPE = CHARACTER START_BYTE = 31 BYTES = 4 FORMAT = "A4" DESCRIPTION = " OBS SYSTEM = Photometric system used for the observation: MLOF = UM Mount Lemmon Observing Facility 1.52-m telescope UM2 = UM O'Brien 0.76-m telescope WIRO = Wyoming Infrared Observatory" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "R" COLUMN_NUMBER = 8 UNIT = "AU" DATA_TYPE = ASCII_REAL START_BYTE = 36 BYTES = 4 FORMAT = "F4.2" DESCRIPTION = " R = Heliocentric distance in AU" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "DELTA " COLUMN_NUMBER = 9 UNIT = "AU" DATA_TYPE = ASCII_REAL START_BYTE = 41 BYTES = 4 FORMAT = "F4.2" DESCRIPTION = " DELTA = Geoocentric distance in AU" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "T BLACKBODY" COLUMN_NUMBER = 10 UNIT = "KELVIN" DATA_TYPE = ASCII_REAL START_BYTE = 46 BYTES = 6 FORMAT = "F6.2" DESCRIPTION = "" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "T COLOR" COLUMN_NUMBER = 11 UNIT = "KELVIN" DATA_TYPE = ASCII_REAL START_BYTE = 53 BYTES = 6 FORMAT = "F6.2" INVALID_CONSTANT = 999.99 DESCRIPTION = " T COLOR = Measured infrared color temperature of the comet's continuum emission" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SUPERHEAT" COLUMN_NUMBER = 12 DATA_TYPE = ASCII_REAL START_BYTE = 60 BYTES = 4 FORMAT = "F4.2" INVALID_CONSTANT = 9.99 DESCRIPTION = " SUPERHEAT = Superheat of the Continuum emission" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "IR APPARENT MAX" COLUMN_NUMBER = 13 UNIT = "WATT/CM^2" DATA_TYPE = ASCII_REAL START_BYTE = 65 BYTES = 9 FORMAT = "E9.2" INVALID_CONSTANT = 1.00e+032 DESCRIPTION = " IR APPARENT MAX = Observed maximum emission from the infrared continuum in Watt per cm^2" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SOLAR COMP APPARENT MAX" COLUMN_NUMBER = 14 UNIT = "WATT/CM^2" DATA_TYPE = ASCII_REAL START_BYTE = 75 BYTES = 9 FORMAT = "E9.2" INVALID_CONSTANT = 1.00E+32 DESCRIPTION = " SOLAR COMP APPARENT MAX = Observed maximum emission from the scattered solar component in Watt per cm^2" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "ALBEDO" COLUMN_NUMBER = 15 DATA_TYPE = ASCII_REAL START_BYTE = 85 BYTES = 4 FORMAT = "F4.2" INVALID_CONSTANT = 9.99 DESCRIPTION = " ALBEDO = Albedo of the coma at the scattering angle" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "BLACKBODY ANGULAR RADIUS" COLUMN_NUMBER = 16 UNIT = "MILLIARCSEC" DATA_TYPE = ASCII_REAL START_BYTE = 90 BYTES = 6 FORMAT = "F6.2" INVALID_CONSTANT = 999.9 DESCRIPTION = " BLACKBODY ANGULAR RADIUS = Equivalent blackbody angular radius of the coma continuum; assumes all emission is from a point-like nucleus with respect to the reference beam" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "NUCLEUS RADIUS" COLUMN_NUMBER = 17 UNIT = "KM" DATA_TYPE = ASCII_REAL START_BYTE = 97 BYTES = 6 FORMAT = "F6.2" INVALID_CONSTANT = 999.99 DESCRIPTION = " NUCLEUS RADIUS = Upper limit to the radius of the nucleus; assumes all emission is from a point-like nucleus with respect to the reference beam" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "SCALE FACTOR" COLUMN_NUMBER = 18 DATA_TYPE = ASCII_REAL START_BYTE = 104 BYTES = 4 FORMAT = "F4.2" DESCRIPTION = " SCALE FACTOR = Multiplier to correct observed coma emission to R = 1 and DELTA = 1: R^-4 * DELTA^-1" END_OBJECT = COLUMN OBJECT = COLUMN NAME = "STANDARD BEAM MULTIPLIER" COLUMN_NUMBER = 19 DATA_TYPE = ASCII_REAL START_BYTE = 109 BYTES = 4 FORMAT = "F4.2" DESCRIPTION = " STANDARD BEAM MULTIPLIER = Multiplier giving the comma emission in a standard beam of 20-arcsec diameter corrected for emission into the reference beam: BEAM DIAMETER MULTIPLIER * STANDARD BEAM MULTIPLIER" END_OBJECT OBJECT = COLUMN NAME = "IR ACTIVITY INDEX" COLUMN_NUMBER = 20 DATA_TYPE = ASCII_REAL START_BYTE = 114 BYTES = 9 FORMAT = "E9.2" INVALID_CONSTANT = 1.00e+032 DESCRIPTION = " IR ACTIVITY INDEX = Total infrared emission corrected for beam size, throw, and distance effects: IR APPARENT INDEX * SCALE FACTOR^-1 * STANDARD BEAM MULTIPLIER" END_OBJECT = COLUMN END_OBJECT = TABLE END