PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM INSTRUMENT_NAME = "RADIO SCIENCE SUBSYSTEM" TARGET_NAME = MARS DATA_SET_ID = "MGS-M-RSS-1-EXT-V1.0" MISSION_NAME = "MARS GLOBAL SURVEYOR" INSTRUMENT_HOST_NAME = "MARS GLOBAL SURVEYOR" PRODUCT_TYPE = IPN ORIGINAL_PRODUCT_ID = "mgs_map5_ipng_mgs75e2.bsp" PRODUCT_ID = "0033093A.IPN" FILE_NAME = "0033093A.IPN" PRODUCT_VERSION_TYPE = "IPN-V1.0" PRODUCT_CREATION_TIME = 2001-11-05T20:12:44 START_TIME = 2000-02-02T14:00:00 STOP_TIME = 2000-04-02T16:00:00 PRODUCER_ID = "MGS RST" NOTE = "MGS trajectory solution mgs_map5_ipng_mgs75e2.bsp from the JPL Inner Planet Navigation Group, merged with Mars satellite ephemeris mar033-5.bsp and planetary ephemeris de405.bsp by the MGS RST at Stanford. MGS Mapping SPK file (5), JPL IPNG Solution MGS75E2 =========================================================================== Created by Boris Semenov, NAIF/JPL, November 5, 2001. Objects in the Ephemeris -------------------------------------------------------- This file contains ephemeris data for the Mars Global Surveyor (MGS) spacecraft. NAIF ID code for MGS is -94. Approximate Time Coverage -------------------------------------------------------- This file covers the whole 13th and 14th 28-day mapping cycles of the Mapping phase of the mission: COVERAGE BEGIN TIME (TDB) COVERAGE END TIME (TDB) ------------------------- ------------------------ 2000 FEB 02 14:00:00.000 2000 APR 02 16:00:00.000 Status -------------------------------------------------------- This SPK file contains MGS orbit reconstruction provided by Dah-Ning Yuan of the Inner Planet Navigation and Gravity Group (IPNG), JPL. This SPK file is NOT recommended by the project science office to be used for the archiving of Mapping data sets but it can be used at one's own risk. Pedigree -------------------------------------------------------- The original SPK files used to make this file were created from a set of NIO files provided to the NAIF team by Dah-Ning Yuan, IPNG/JPL. The following are the models used for the orbit determination process: KINEMATIC MODELS: 1. Earth Precession and Nutation. 2. Earth rotation and Polar motion. 3. DSN station coordinates and velocity (Folkner). 4. Solid Earth Tide on station coordinates. 5. Ocean Loading Tide on station coordinates. 6. Pole Tide on station coordinates. DYNAMIC MODELS: 1. Planetary (DE407) and satellite ephemeris (MAR033.7). 2. General relativity. 3. MGS75E2 mars gravity field (Sjogren et. al.). 4. Solid tides. 5. Mars-GRAM (Mars global reference atmosphere model). 6. Solar radiation. 7. Mars radiation (Lemoine). 8. Small forces. ESTIMATED PARAMETERS: 1. Initial state: per orbit arc. 2. Solar radiation scale factor: per orbit arc. 3. Drag coefficient: per orbit revolution. 4. Small forces: at Angular Momentum Dump (AMD) time. 5. Range bias: per pass. 6. F3 bias: per pass. 7. F2 bias: one bias. 8. F1 bias: per pass. 9. Spacecraft frequency bias for F1 data: per arc. REFERENCES: 1. Folkner, William, JPL IOM 335.1-95-027, 16 October 1995. 2. Lemoine, Frank G., Mars: the dynamics of orbiting satellites and gravity model development, 1992, Ph.D thesis. 3. Yuan D. N., W. L. Sjogren, A. S. Konopliv, and A. B. Kucinskas, The gravity field of Mars: A 75th degree and order model, J. Geophys. Res., in press, 2001. The naming convention for the original SPK files was: p_XXXXX_YYYY_MM_DD.bsp where the designation refers to: XXXXX gravity model name; YYYY_MM_DD file coverage start date; Data from the following original NIO files were included into this file: FILE NAME ----------------------- p_mgs75e2_2000_02_02.bsp p_mgs75e2_2000_02_04.bsp p_mgs75e2_2000_02_06.bsp p_mgs75e2_2000_02_08.bsp p_mgs75e2_2000_02_10.bsp p_mgs75e2_2000_02_12.bsp p_mgs75e2_2000_02_14.bsp p_mgs75e2_2000_02_16.bsp p_mgs75e2_2000_02_18.bsp p_mgs75e2_2000_02_20.bsp p_mgs75e2_2000_02_22.bsp p_mgs75e2_2000_02_24.bsp p_mgs75e2_2000_02_26.bsp p_mgs75e2_2000_02_28.bsp p_mgs75e2_2000_03_01.bsp p_mgs75e2_2000_03_04.bsp p_mgs75e2_2000_03_07.bsp p_mgs75e2_2000_03_09.bsp p_mgs75e2_2000_03_11.bsp p_mgs75e2_2000_03_13.bsp p_mgs75e2_2000_03_15.bsp p_mgs75e2_2000_03_19.bsp p_mgs75e2_2000_03_21.bsp p_mgs75e2_2000_03_23.bsp p_mgs75e2_2000_03_25.bsp p_mgs75e2_2000_03_27.bsp p_mgs75e2_2000_03_29.bsp p_mgs75e2_2000_03_31.bsp Contacts -------------------------------------------------------- If you have any questions regarding this data contact Boris V. Semenov, NAIF/JPL, (818)-354-8136, bsemenov@spice.jpl.nasa.gov or: Dah-Ning Yuan, dny@krait.jpl.nasa.gov" ^DESCRIPTION = "IPN_SPK.TXT" END