KPL/FK FILE: dss_35_36_prelim_itrf93_140620.tf This file was created by PINPOINT. PINPOINT Version 3.0.0 --- March 26, 2009 PINPOINT RUN DATE/TIME: 2014-06-20T19:01:17 PINPOINT DEFINITIONS FILE: 35_36.inp PINPOINT PCK FILE: dsn.tpc PINPOINT SPK FILE: dss_35_36_prelim_itrf93_140620.bsp The input definitions file is appended to this file as a comment block. Body-name mapping follows: \begindata NAIF_BODY_NAME += 'DSS-35' NAIF_BODY_CODE += 399035 NAIF_BODY_NAME += 'DSS-36' NAIF_BODY_CODE += 399036 \begintext Reference frame specifications follow: Topocentric frame DSS-35_TOPO The Z axis of this frame points toward the zenith. The X axis of this frame points North. Topocentric frame DSS-35_TOPO is centered at the site DSS-35 which at the epoch 2003 JAN 01 00:00:00.000 TDB has Cartesian coordinates X (km): -0.4461273083800E+04 Y (km): 0.2682568922000E+04 Z (km): -0.3674152088500E+04 and planetodetic coordinates Longitude (deg): 148.9814557600491 Latitude (deg): -35.3957956324818 Altitude (km): 0.6955933961813E+00 These planetodetic coordinates are expressed relative to a reference spheroid having the dimensions Equatorial radius (km): 6.3781363000000E+03 Polar radius (km): 6.3567516005629E+03 All of the above coordinates are relative to the frame ITRF93. \begindata FRAME_DSS-35_TOPO = 1399035 FRAME_1399035_NAME = 'DSS-35_TOPO' FRAME_1399035_CLASS = 4 FRAME_1399035_CLASS_ID = 1399035 FRAME_1399035_CENTER = 399035 OBJECT_399035_FRAME = 'DSS-35_TOPO' TKFRAME_1399035_RELATIVE = 'ITRF93' TKFRAME_1399035_SPEC = 'ANGLES' TKFRAME_1399035_UNITS = 'DEGREES' TKFRAME_1399035_AXES = ( 3, 2, 3 ) TKFRAME_1399035_ANGLES = ( -148.9814557600491, -125.3957956324818, 180.0000000000000 ) \begintext Topocentric frame DSS-36_TOPO The Z axis of this frame points toward the zenith. The X axis of this frame points North. Topocentric frame DSS-36_TOPO is centered at the site DSS-36 which has Cartesian coordinates X (km): -0.4461170235800E+04 Y (km): 0.2682816024000E+04 Z (km): -0.3674085973700E+04 and planetodetic coordinates Longitude (deg): 148.9785416670200 Latitude (deg): -35.3951052825684 Altitude (km): 0.6892545905352E+00 These planetodetic coordinates are expressed relative to a reference spheroid having the dimensions Equatorial radius (km): 6.3781363000000E+03 Polar radius (km): 6.3567516005629E+03 All of the above coordinates are relative to the frame ITRF93. \begindata FRAME_DSS-36_TOPO = 1399036 FRAME_1399036_NAME = 'DSS-36_TOPO' FRAME_1399036_CLASS = 4 FRAME_1399036_CLASS_ID = 1399036 FRAME_1399036_CENTER = 399036 OBJECT_399036_FRAME = 'DSS-36_TOPO' TKFRAME_1399036_RELATIVE = 'ITRF93' TKFRAME_1399036_SPEC = 'ANGLES' TKFRAME_1399036_UNITS = 'DEGREES' TKFRAME_1399036_AXES = ( 3, 2, 3 ) TKFRAME_1399036_ANGLES = ( -148.9785416670200, -125.3951052825684, 180.0000000000000 ) \begintext Definitions file 35_36.inp -------------------------------------------------------------------------------- SPK/FK for Preliminary DSS-35, DSS-36 Station Locations ===================================================================== Original SPK file name: dss_35_36_prelim_itrf93_140620.bsp Original FK file name: dss_35_36_prelim_itrf93_140620.tf Creation date: 2014 June 20 18:59 Created by: Nat Bachman (NAIF/JPL) Data for DSS-35 are based on an email from Dr. William Folkner, dated June 13, 2014. The position data from that email are shown below: >> Cartesian coordinates x, y, z (m) >> >> -4461273.0838 2682568.9220 -3674152.0885 The email states that the position is accurate to about 1 cm. It also states that the site velocity for other stations in the Canberra complex applies to DSS-35. This velocity is now included in the SPK file for this station. The epoch of the data is 2003.0. The velocity has been transformed to the ITRF93 reference frame from the DSS-35_TOPO frame, and it has been scaled to units of m/year. The original velocity data are included at the end of this file. Topocentric frame orientations were derived using earth radii included below. Data for DSS-36 are based on an email from Dr. William Folkner, dated May 28, 2014. The position data from that email are shown below: > Cartesian coordinates (m) >36 DSS-36 -4461170.2358 2682816.0240 -3674085.9737 Note that site velocity data are not included. Topocentric frame orientations were derived using earth radii included below. begindata SITES += 'DSS-35' DSS-35_FRAME = 'ITRF93' DSS-35_CENTER = 399 DSS-35_IDCODE = 399035 DSS-35_BOUNDS = ( @1950-JAN-01/00:00, @2050-JAN-01/00:00 ) DSS-35_XYZ = ( -4461.2730838 2682.5689220 -3674.1520885 ) DSS-35_DXYZ = ( -3.340926970650297e-02 -4.181661498524273e-03 3.933413790576708e-02 ) DSS-35_EPOCH = @2003-JAN-01/00:00:00 DSS-35_TOPO_EPOCH = @2003-JAN-01/00:00:00 DSS-35_UP = 'Z' DSS-35_NORTH = 'X' SITES += 'DSS-36' DSS-36_FRAME = 'ITRF93' DSS-36_CENTER = 399 DSS-36_IDCODE = 399036 DSS-36_BOUNDS = ( @1950-JAN-01/00:00, @2050-JAN-01/00:00 ) DSS-36_XYZ = ( -4461.1702358 2682.8160240 -3674.0859737 ) DSS-36_UP = 'Z' DSS-36_NORTH = 'X' begintext Earth radii for DSN kernel generation ===================================== Author: Nat Bachman File creation date: 03-JUN-2014 Reference Spheroid ------------------ The reference bi-axial spheroid is defined by an equatorial and a polar radius. Calling these Re and Rp respectively, the flattening factor f is defined as f = ( Re - Rp ) / Re For the reference spheroid used by this file, the equatorial radius Re and inverse flattening factor 1/f are Re = 6378136.3 m 1/f = 298.257 Derived Rp = 6356.7516005629377 begindata BODY399_RADII = ( 6378.1363, 6378.1363, 6356.7516005629377 ) begintext Velocity data ------------- The relevant portion of the ODP input file providing station velocities is copied (and reformatted) below. Reference epoch for plate motion: 01-JAN-2003 00:00 Plate motion model, cm/year North East Vertical Canberra: Stations numbered 3X 4.74 2.08 -0.12 begintext [End of definitions file]