PDS_VERSION_ID = PDS3 /* File Characteristics */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 32 FILE_RECORDS = 16471 /* Data Object Pointers */ ^TABLE = "phobos.tab" /* Identification Keywords */ DATA_SET_ID = "EAR-A-5-DDR-SHAPE-MODELS-V2.0" PRODUCT_NAME = "Phobos Shape Model" PRODUCT_ID = "SHAPE-PHOBOS-200006" INSTRUMENT_HOST_NAME = "N/A" INSTRUMENT_NAME = "N/A" TARGET_NAME = PHOBOS START_TIME = "N/A" STOP_TIME = "N/A" PRODUCT_CREATION_TIME = 2000-06-01 /* Peer Review Date */ RECORD_FORMAT = "3(2x,f8.4)" /* Data Object Descriptions */ OBJECT = TABLE ROWS = 16471 ROW_BYTES = 32 INTERCHANGE_FORMAT = ASCII COLUMNS = 3 DESCRIPTION = "Numerical shape model of M1 Phobos, derived from Viking orbiter images with some checks with Mariner 9 and Phobos 2 data. The model has uncertainties of a few hundred meters in places, especially between 35 and 190 degrees longitude. This shape model consists of a grid with points every 2 degrees in latitude and longitude, with a radius in km associated with each point. The model is written with both 0 and 360 longitude entries. Coordinates are planetocentric. Generation is described in Thomas 1993. Phobos rotates synchronously with its orbital period, with libration of about 1 degree. Spin pole: RA=317.68, Dec= 52.90 J2000 in degrees. Prime meridian W = 35.06 + 1128.8445850d in degrees, where d is the number of days from the standard epoch (JD 2451545.0). See Davies et al. 1996 for slight variations with precession; Duxbury and Callahan 1989 for libration." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "LATITUDE" UNIT = DEGREE DATA_TYPE = ASCII_REAL START_BYTE = 3 BYTES = 8 FORMAT = "F8.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "LONGITUDE" UNIT = DEGREE DATA_TYPE = ASCII_REAL START_BYTE = 13 BYTES = 8 FORMAT = "F8.4" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "RADIUS" DESCRIPTION = "Shape model radius for this latitude and longitude." UNIT = KILOMETER DATA_TYPE = ASCII_REAL START_BYTE = 23 BYTES = 8 FORMAT = "F8.4" END_OBJECT = COLUMN END_OBJECT = TABLE END