PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH FILE_RECORDS = 5256 RECORD_BYTES = 193 ^HEADER = ("L00073NG.TAB",1) ^TABLE = ("L00073NG.TAB",3) DATA_SET_ID = "NEAR-A-NLR-5-CDR-EROS/ORBIT-V1.0" PRODUCT_ID = "NLR-L00073NG.TAB" SPACECRAFT_NAME = "NEAR EARTH ASTEROID RENDEZVOUS" INSTRUMENT_ID = NLR INSTRUMENT_NAME = "NEAR LASER RANGEFINDER" TARGET_NAME = EROS START_TIME = 2000-03-13T00:00:37.345 STOP_TIME = 2000-03-13T23:59:45.317 SPACECRAFT_CLOCK_START_COUNT = "128315864" SPACECRAFT_CLOCK_STOP_COUNT = "128402212" PRODUCT_CREATION_TIME = 2001-06-15 PRODUCER_FULL_NAME = "DAVID E. SMITH" PRODUCER_INSTITUTION_NAME = "GODDARD SPACE FLIGHT CENTER" DESCRIPTION = "The NLR data product contains a time series of calibrated ranges collected by the NLR instrument. Precision orbit data describing the instrument's position and shot locations on 433 Eros has been added to each record. Orbital data is supplied by the NLR Science Team. The SPICE files de403s.bsp, naif0007.tls, and pck0006.tpc used are constants in the analysis and are not repeated in the HEADER_TABLE described below. The gravity potential at each shot is derived by numerical integration of the best available NLR shape model, assuming a constant density of 2670 kg m**-3. The relevant orbit SPICE dataset is NEAR-A-SPICE-6-EDR-EROS/ORBIT-V1.0" OBJECT = HEADER BYTES = 386 RECORDS = 2 HEADER_TYPE = SPREADSHEET INTERCHANGE_FORMAT = ASCII DESCRIPTION = "This file begins with two records containing header information. The first record lists the name of the source FITS file and the SPICE kernels used to compile the information included in the table. The SPICE dataset is not included on this NLR volume and has been archived separately. The files listed are, in order: aggregated NLR telemetry filename; SPICE Orientation file for NEAR; SPICE spacecraft position for NEAR; Additional SPICE position file for NEAR; SPICE on-board time (SCLK) to ET mapping; SPICE file for 433 Eros ephemeris; SPICE Orientation file for 433 Eros; SPICE Instrument kernel file for NLR. The second record provides column labels for each column in the table." END_OBJECT = HEADER OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 5254 ROW_BYTES = 193 COLUMNS = 19 OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = LONGITUDE DATA_TYPE = ASCII_REAL POSITIVE_LONGITUDE_DIRECTION = EAST START_BYTE = 1 BYTES = 9 FORMAT = "F9.5" UNIT = DEGREE DESCRIPTION = "East longitude of the laser range point in body fixed, center of mass coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = LATITUDE DATA_TYPE = ASCII_REAL START_BYTE = 10 BYTES = 10 FORMAT = "F10.5" UNIT = DEGREE DESCRIPTION = "North latitude of the laser range point in body fixed, center of mass coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = EROS_RADIUS DATA_TYPE = ASCII_REAL START_BYTE = 20 BYTES = 10 FORMAT = "F10.2" UNIT = METER DESCRIPTION = "The magnitude of the vector from the center of Eros to the laser range point, in meters." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = EPHEMERIS_TIME DATA_TYPE = ASCII_REAL START_BYTE = 30 BYTES = 13 FORMAT = "F13.3" UNIT = SECOND DESCRIPTION = "Laser Fire Time, Seconds past J2000." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = UTC DATA_TYPE = TIME START_BYTE = 44 BYTES = 21 FORMAT = "A21" DESCRIPTION = "Laser Fire Time, UTC, ISO Day-of-Year format" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = RANGE DATA_TYPE = ASCII_REAL START_BYTE = 65 BYTES = 10 FORMAT = "F10.2" UNIT = METER DESCRIPTION = "Range is 0.5 * counts * (c/f) - r_corr, where c is the speed of light, f=480,000,000 Hz, and r_corr is the range walk correction at the receiver_threshold." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = RECEIVER_THRESHOLD DATA_TYPE = ASCII_INTEGER START_BYTE = 75 BYTES = 2 FORMAT = "I2" DESCRIPTION = "An instrument parameter that sets the trigger threshold for shot detection, as described in the NLR calibration document [CHENGETAL2000]." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = ANOMALY_FLAG DATA_TYPE = ASCII_INTEGER START_BYTE = 77 BYTES = 2 FORMAT = "I2" DESCRIPTION = "The anomaly flag, set to zero for a valid geolocated range to Eros. Flag is set to 1 if probable noise." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = SPACECRAFT_LONGITUDE DATA_TYPE = ASCII_REAL START_BYTE = 79 BYTES = 10 FORMAT = "F10.5" UNIT = DEGREE DESCRIPTION = "The east longitude of the spacecraft in Eros body-fixed coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = SPACECRAFT_LATITUDE DATA_TYPE = ASCII_REAL START_BYTE = 89 BYTES = 10 FORMAT = "F10.5" UNIT = DEGREE DESCRIPTION = "The north latitude of the spacecraft in Eros body-fixed coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = SCRDST DATA_TYPE = ASCII_REAL START_BYTE = 99 BYTES = 10 FORMAT = "F10.2" UNIT = METER DESCRIPTION = "The magnitude of the vector from Eros center to NEAR." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = EMISSION_ANGLE DATA_TYPE = ASCII_REAL START_BYTE = 109 BYTES = 9 FORMAT = "F9.4" UNIT = DEGREE DESCRIPTION = "The angle between the vector from NEAR to the laser range point and the vector from NEAR to Eros center of mass." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 NAME = OFF_NADIR DATA_TYPE = ASCII_REAL START_BYTE = 118 BYTES = 9 FORMAT = "F9.4" UNIT = DEGREE DESCRIPTION = "The angle between the vector from NEAR to the range point and the vector from NEAR to Eros." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = SCLCKCH DATA_TYPE = ASCII_REAL START_BYTE = 127 BYTES = 14 FORMAT = "F14.3" UNIT = SECOND DESCRIPTION = "The laser fire time in decimal seconds." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 NAME = EROS_X DATA_TYPE = ASCII_REAL START_BYTE = 141 BYTES = 11 FORMAT = "F11.2" UNIT = METER DESCRIPTION = "First component of the laser range point in body fixed Cartesian coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 16 NAME = EROS_Y DATA_TYPE = ASCII_REAL START_BYTE = 152 BYTES = 11 FORMAT = "F11.2" UNIT = METER DESCRIPTION = "Second component of the laser range point in body fixed Cartesian coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 17 NAME = EROS_Z DATA_TYPE = ASCII_REAL START_BYTE = 163 BYTES = 11 FORMAT = "F11.2" UNIT = METER DESCRIPTION = "Third component of the laser range point in body fixed Cartesian coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 18 NAME = OMEGA DATA_TYPE = ASCII_REAL START_BYTE = 174 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIANS PER SECOND" DESCRIPTION = "Inertial angular velocity of spacecraft." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 19 NAME = POTENTIAL DATA_TYPE = ASCII_REAL NOT_APPLICABLE_CONSTANT = 0.0 START_BYTE = 183 BYTES = 9 FORMAT = "F9.5" UNIT = "METERS SQUARED PER SECONDS SQUARED" DESCRIPTION = "Gravitational and rotational potential, assuming a uniform density, from the NLR shape model NLR125AR.IMG, at the laser bounce point." END_OBJECT = COLUMN END_OBJECT = TABLE END