PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 242 FILE_RECORDS = 2419 ^TABLE = "NAV_PHOT.TAB" DATA_SET_ID = "DIF-C-MRI-5-TEMPEL1-PHOTOMETRY-V1.0" PRODUCT_ID = "DI_MRI_NAV_PHOT_TAB" PRODUCT_NAME = "9P/TEMPEL1 PHOTOMETRY FROM DEEP IMPACT MRI NAVIGATION IMAGES" PRODUCT_CREATION_TIME = 2008-05-05T19:37:00 INSTRUMENT_HOST_NAME = "DEEP IMPACT FLYBY SPACECRAFT" INSTRUMENT_HOST_ID = "DIF" INSTRUMENT_NAME = "DEEP IMPACT MEDIUM RESOLUTION INSTRUMENT - VISIBLE CCD" INSTRUMENT_ID = "MRI" TARGET_NAME = "9P/TEMPEL 1 (1867 G1)" START_TIME = 2005-05-15T05:10:42.906 STOP_TIME = 2005-07-03T23:47:30.393 OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 2419 COLUMNS = 15 ROW_BYTES = 242 DESCRIPTION = "This table contains the approach photometry of comet 9P/Tempel 1 derived from Deep Impact optical navigation images." OBJECT = COLUMN NAME = "OBSMIDJD" COLUMN_NUMBER = 1 DATA_TYPE = "ASCII_REAL" START_BYTE = 1 BYTES = 15 FORMAT = "F15.7" DESCRIPTION = "Full Julian date, at the spacecraft, for the mid-point of the observation. This value was extracted from the header of the FITS file listed in the last column of this row." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "OBSMIDDT" COLUMN_NUMBER = 2 DATA_TYPE = "CHARACTER" START_BYTE = 18 BYTES = 23 FORMAT = "A23" DESCRIPTION = "UTC date, at the spacecraft, for the mid-point of the observation. This value was extracted from the header of the FITS file listed in the last column of this row. The format is YYYY-MM-DDTHH:MM:SS.sss." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FILTER" COLUMN_NUMBER = 3 DATA_TYPE = "CHARACTER" START_BYTE = 44 BYTES = 6 FORMAT = "A6" DESCRIPTION = "Clear filter used to take the image. The CLEAR1 filter has a center wavelength of 650nm and a bandwidth greater than 700nm." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "CENTROID_X_COORDINATE" COLUMN_NUMBER = 4 DATA_TYPE = "ASCII_REAL" START_BYTE = 52 BYTES = 8 FORMAT = "F8.3" DESCRIPTION = "Horizontal coordinate of the comet centroid (assumes the image is displayed with lines increasing up and samples to the right)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "CENTROID_Y_COORDINATE" COLUMN_NUMBER = 5 DATA_TYPE = "ASCII_REAL" START_BYTE = 62 BYTES = 8 FORMAT = "F8.3" DESCRIPTION = "Vertical coordinate of the comet centroid (assumes the image is displayed with lines increasing up and samples to the right)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "DISTANCE_FROM_ANTI_GAP" COLUMN_NUMBER = 6 DATA_TYPE = "ASCII_REAL" START_BYTE = 72 BYTES = 8 FORMAT = "F8.3" DESCRIPTION = "Distance, in pixels, of comet centroid from horizontal boundary between CCD quadrants (for a 256x256 pixel image, this boundary is defined as 127.5 assuming the first pixel is at (0,0))." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FLUX_5_PIXEL_APERTURE" COLUMN_NUMBER = 7 DATA_TYPE = "ASCII_REAL" START_BYTE = 82 BYTES = 14 FORMAT = "F14.3" UNIT = "DN s^-1" DESCRIPTION = "Photometry of comet 9P/Tempel 1 measured using a 5 pixel diameter circular aperture." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FLUX_7_PIXEL_APERTURE" COLUMN_NUMBER = 8 DATA_TYPE = "ASCII_REAL" START_BYTE = 98 BYTES = 14 FORMAT = "F14.3" UNIT = "DN s^-1" DESCRIPTION = "Photometry of comet 9P/Tempel 1 measured using a 7 pixel diameter circular aperture." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FLUX_9_PIXEL_APERTURE" COLUMN_NUMBER = 9 DATA_TYPE = "ASCII_REAL" START_BYTE = 114 BYTES = 14 FORMAT = "F14.3" UNIT = "DN s^-1" DESCRIPTION = "Photometry of comet 9P/Tempel 1 measured using a 9 pixel diameter circular aperture." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FLUX_15_PIXEL_APERTURE" COLUMN_NUMBER = 10 DATA_TYPE = "ASCII_REAL" START_BYTE = 130 BYTES = 14 FORMAT = "F14.3" UNIT = "DN s^-1" DESCRIPTION = "Photometry of comet 9P/Tempel 1 measured using a 15 pixel diameter circular aperture." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FLUX_20_PIXEL_APERTURE" COLUMN_NUMBER = 11 DATA_TYPE = "ASCII_REAL" START_BYTE = 146 BYTES = 14 FORMAT = "F14.3" UNIT = "DN s^-1" DESCRIPTION = "Photometry of comet 9P/Tempel 1 measured using a 20 pixel diameter circular aperture." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FLUX_25_PIXEL_APERTURE" COLUMN_NUMBER = 12 DATA_TYPE = "ASCII_REAL" START_BYTE = 162 BYTES = 14 FORMAT = "F14.3" UNIT = "DN s^-1" DESCRIPTION = "Photometry of comet 9P/Tempel 1 measured using a 25 pixel diameter circular aperture." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FLUX_30_PIXEL_APERTURE" COLUMN_NUMBER = 13 DATA_TYPE = "ASCII_REAL" START_BYTE = 178 BYTES = 14 FORMAT = "F14.3" UNIT = "DN s^-1" DESCRIPTION = "Photometry of comet 9P/Tempel 1 measured using a 30 pixel diameter circular aperture." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = "TARGET_CENTER_DISTANCE" START_BYTE = 194 BYTES = 14 DATA_TYPE = "ASCII_REAL" FORMAT = "F14.4" UNIT = "KILOMETERS" DESCRIPTION = "Range or distance from the spacecraft to the center of the target. The range was calculated using the Deep Impact SPICE data set archived at the PDS. Although the range is available in header of the FITS file listed in the last column of this row, the values were not extracted for this photometry table because the automated data pipeline for the mission could not calculate the range for several observations due to the limited pointing information." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "FITS_FILE_NAME" COLUMN_NUMBER = 15 DATA_TYPE = "CHARACTER" START_BYTE = 210 BYTES = 31 FORMAT = "A31" DESCRIPTION = "This parameter provides the name of archived, raw, optical navigation FITS file that was the source for this photometric measurement. Please note the time stamp in a raw navigation image file name is the downlink date which can lag behind the observation date by several hours or days." END_OBJECT = COLUMN END_OBJECT = TABLE END