PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 598 FILE_RECORDS = 6719 INSTRUMENT_HOST_NAME = "CLEMENTINE 1" TARGET_NAME = "MOON" INSTRUMENT_NAME = "RADIO SCIENCE SUBSYSTEM" DATA_SET_ID = "CLEM1-L-RSS-5-BSR-V1.0" PRODUCT_ID = "BSRGEOM.TAB" ^TABLE = "BSRGEOM.TAB" PRODUCT_CREATION_TIME = 1999-11-22T18:43:00 OBJECT = TABLE NAME = "BSR GEOMETRY ORBIT 234" INTERCHANGE_FORMAT = ASCII ROWS = 6719 COLUMNS = 25 ROW_BYTES = 598 DESCRIPTION = "Table gives observing geometry during Orbit 234 of the Clementine bistatic radar experiment. Table values allow reconstruction of bistatic observing geometry, including calculation of Doppler offsets, during times when anomalous backscatter from the South Pole was most likely. There are 25 columns providing: Earth receive time (ERT) transmit time (ERT minus one-way light time) lunar fixed-body x, y, and z vectors vector to the spacecraft vector to the DSN receiving station vector to the beta=0 point (backscatter point) or vector to raypath closest approach point when beta=0 was not on Moon vector to the specular point vector to the lunar South Pole latitude/longitude of beta=0 (or raypath C/A) and specular points incidence and scattering angles at all three points bistatic angle at the South Pole Beta=0 is the point on the lunar surface where bistatic backscatter would be observed. If a photon were radiated by the spacecraft and scattered by the surface, its incoming and outgoing paths would be identical at the beta=0 point. As the spacecraft moved in its orbit, the beta=0 point traced a path along the surface until it reached the limb. As seen from Earth, the spacecraft would appear silhouetted against the lunar disk until reaching the limb. The beta=0 point becomes undefined beyond the limb, but the ray passing above the limb has a closest approach point which is of interest for occultation studies. Coordinate frames used are selenocentric J2000 and lunar fixed body (rotating). Assumption made include: (1) Moon is a sphere with radius 1737.4 km; (2) speed of light is 299792458. m/s; (3) receiving station was DSS 14 at Goldstone, CA. This is an ASCII table. Columns and items are delimited by commas (vectors are considered to be single columns comprising three 'items'). Data and delimiters occupy the first 596 bytes of each row; rows are delimited by an ASCII carriage-return line-feed pair in positions 597 and 598." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "TRX" DATA_TYPE = ASCII_INTEGER START_BYTE = 1 BYTES = 5 FORMAT = "I5" UNIT = SECOND DESCRIPTION = "Earth received time (UTC) for which the geometrical calculations were made." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "TTX" DATA_TYPE = ASCII_REAL START_BYTE = 7 BYTES = 12 FORMAT = "F12.6" UNIT = SECOND DESCRIPTION = "Transmit time corresponding to TRX. The one-way light time for a photon traveling directly from the spacecraft to the DSN station has been subtracted from TRX." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "NPOLE" DATA_TYPE = ASCII_REAL START_BYTE = 20 BYTES = 29 ITEMS = 3 ITEM_BYTES = 9 ITEM_OFFSET = 10 FORMAT = "F9.6" UNIT = "N/A" DESCRIPTION = "North Pole unit vector in J2000 coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 4 NAME = "FBODX" DATA_TYPE = ASCII_REAL START_BYTE = 50 BYTES = 29 ITEMS = 3 ITEM_BYTES = 9 ITEM_OFFSET = 10 FORMAT = "F9.6" UNIT = "N/A" DESCRIPTION = "Fixed body lunar x-axis unit vector in J2000 coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 5 NAME = "FBODY" DATA_TYPE = ASCII_REAL START_BYTE = 80 BYTES = 29 ITEMS = 3 ITEM_BYTES = 9 ITEM_OFFSET = 10 FORMAT = "F9.6" UNIT = "N/A" DESCRIPTION = "Fixed body lunar y-axis unit vector in J2000 coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 6 NAME = "DOD" DATA_TYPE = ASCII_REAL START_BYTE = 110 BYTES = 41 ITEMS = 3 ITEM_BYTES = 13 ITEM_OFFSET = 14 FORMAT = "E13.6" UNIT = "METER" DESCRIPTION = "Center of Moon to DSS 14 vector at TRX in J2000 coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 7 NAME = "DOS" DATA_TYPE = ASCII_REAL START_BYTE = 152 BYTES = 41 ITEMS = 3 ITEM_BYTES = 13 ITEM_OFFSET = 14 FORMAT = "E13.6" UNIT = "METER" DESCRIPTION = "Center of Moon to spacecraft vector at TTX in J2000 coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 8 NAME = "DSD" DATA_TYPE = ASCII_REAL START_BYTE = 194 BYTES = 41 ITEMS = 3 ITEM_BYTES = 13 ITEM_OFFSET = 14 FORMAT = "E13.6" UNIT = "METER" DESCRIPTION = "Spacecraft (TTX) to DSS 14 (TRX) vector in J2000 coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 9 NAME = "DOT" DATA_TYPE = ASCII_REAL START_BYTE = 236 BYTES = 41 ITEMS = 3 ITEM_BYTES = 13 ITEM_OFFSET = 14 FORMAT = "E13.6" UNIT = "METER" DESCRIPTION = "Center of Moon to South Pole vector in J2000 coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 10 NAME = "DTD" DATA_TYPE = ASCII_REAL START_BYTE = 278 BYTES = 41 ITEMS = 3 ITEM_BYTES = 13 ITEM_OFFSET = 14 FORMAT = "E13.6" UNIT = "METER" DESCRIPTION = "South Pole (TTX) to DSS 14 (TRX) vector in J2000 coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 11 NAME = "DTS" DATA_TYPE = ASCII_REAL START_BYTE = 320 BYTES = 41 ITEMS = 3 ITEM_BYTES = 13 ITEM_OFFSET = 14 FORMAT = "E13.6" UNIT = "METER" DESCRIPTION = "South Pole to spacecraft vector at TTX in J2000 coordinates." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 12 NAME = "THTI" DATA_TYPE = ASCII_REAL START_BYTE = 362 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" DESCRIPTION = "Incidence angle at South Pole. Values larger than pi/2 mean the spacecraft is below the horizon at the Pole." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 13 NAME = "THTS" DATA_TYPE = ASCII_REAL START_BYTE = 372 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" DESCRIPTION = "Scattering angle at South Pole. Values larger than pi/2 mean that DSS 14 is below the horizon at the Pole." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 14 NAME = "BETA" DATA_TYPE = ASCII_REAL START_BYTE = 382 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" DESCRIPTION = "Bistatic angle at South Pole. Separation angle between DSS 14 and the spacecraft as seen at the Pole." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 15 NAME = "DOB" DATA_TYPE = ASCII_REAL START_BYTE = 392 BYTES = 41 ITEMS = 3 ITEM_BYTES = 13 ITEM_OFFSET = 14 FORMAT = "E13.6" UNIT = "METER" DESCRIPTION = "Center of Moon to beta=0 (backscatter) point in J2000 coordinates. If the beta=0 point does not exist, this vector is undefined and BLAT and BLON should be set to -9.999999." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 16 NAME = "BLAT" DATA_TYPE = ASCII_REAL START_BYTE = 434 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" INVALID_CONSTANT = -9.999999 DESCRIPTION = "Selenocentric latitude of beta=0 point. Set to -9.999999 if the point does not exist." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 17 NAME = "BLON" DATA_TYPE = ASCII_REAL START_BYTE = 444 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" INVALID_CONSTANT = -9.999999 DESCRIPTION = "Selenocentric east longitude of beta=0 point. Set to -9.999999 if the point does not exist." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 18 NAME = "DOR" DATA_TYPE = ASCII_REAL START_BYTE = 454 BYTES = 41 ITEMS = 3 ITEM_BYTES = 13 ITEM_OFFSET = 14 FORMAT = "E13.6" UNIT = "METER" DESCRIPTION = "Center of Moon to raypath closest approach in J2000 coordinates. If the beta=0 point does not exist, this vector is undefined and BLAT and BLON should be set to -9.999999." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 19 NAME = "RLAT" DATA_TYPE = ASCII_REAL START_BYTE = 496 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" INVALID_CONSTANT = -9.999999 DESCRIPTION = "Selenocentric latitude of the DSD ray closest approach point. Set to -9.999999 if the spacecraft is closer to the DSN receiver than the center of the Moon." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 20 NAME = "RLON" DATA_TYPE = ASCII_REAL START_BYTE = 506 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" INVALID_CONSTANT = -9.999999 DESCRIPTION = "Selenocentric east longitude of the DSD ray closest approach point. Set to -9.999999 if the spacecraft is closer to the DSN receiver than the center of the Moon." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 21 NAME = "DOP" DATA_TYPE = ASCII_REAL START_BYTE = 516 BYTES = 41 ITEMS = 3 ITEM_BYTES = 13 ITEM_OFFSET = 14 FORMAT = "E13.6" UNIT = "METER" DESCRIPTION = "Center of Moon to specular point vector in J2000 coordinates. If the specular point does not exist, this vector is undefined and PLAT and PLON should be set to -9.999999" END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 22 NAME = "THPI" DATA_TYPE = ASCII_REAL START_BYTE = 558 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" DESCRIPTION = "Incidence angle at specular point." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 23 NAME = "THPS" DATA_TYPE = ASCII_REAL START_BYTE = 568 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" DESCRIPTION = "Reflection angle at specular point." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 24 NAME = "PLAT" DATA_TYPE = ASCII_REAL START_BYTE = 578 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" INVALID_CONSTANT = -9.999999 DESCRIPTION = "Selenocentric latitude of specular point. Set to -9.999999 if the specular point does not exist (the spacecraft is in occultation)." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 25 NAME = "PLON" DATA_TYPE = ASCII_REAL START_BYTE = 588 BYTES = 9 FORMAT = "F9.6" UNIT = "RADIAN" INVALID_CONSTANT = -9.999999 DESCRIPTION = "Selenocentric east longitude of specular point. Set to -9.999999 if the specular point does not exist (the spacecraft is in occultation)." END_OBJECT = COLUMN END_OBJECT = TABLE END