M01 Spacecraft Orientation CK File for Aerobraking, 2001-12 =========================================================================== Created by Boris Semenov, NAIF/JPL, Thu Mar 14 07:52:53 PST 2002 Orientation Data in the File -------------------------------------------------------- This file contains orientation and angular velocity data for the Mars-01 Odyssey (M01) spacecraft frame, 'M01_SPACECRAFT', relative to the 'MARSIAU' inertial frame. The NAIF ID code for the 'M01_SPACECRAFT' frame is -53000. Status -------------------------------------------------------- This file was created by NAIF for archiving with the Planetary Data System (PDS) from daily CK files produced by NAIF Team, JPL. Pedigree -------------------------------------------------------- The original CK files used to create this file were officially delivered to the M01 project by the NAIF Team. These files contained spacecraft frame orientation relative to the 'MARSIAU' inertial frame. The orientation was computed, converted to quaternions and filtered on-board; filtered quaternions were transmitted to the Earth in the channelized telemetry. On the ground quaternions were extracted from telemetry and written to daily CK files using the MSOPCK program. The individual daily files were merged together to provide complete coverage on a mission/monthly phase basis. A table containing the complete list of original CK files from which data were included in this file is provided at the end of these comments. Approximate Time Coverage -------------------------------------------------------- This file covers the following interval of the Aerobraking phase of the mission: Coverage Begin UTC Coverage End UTC ------------------------ ------------------------ 2001-DEC-01 00:00:03.726 2001-DEC-31 23:59:57.368 This file is a type 3 CK file which provides linear interpolation between orientation data points extracted from telemetry. Such interpolation is not applied to the whole coverage of the file but only inside intervals where enough orientation telemetry data was available and orientation data points were close to each other in time for such interpolation to make sense. The nominal quaternion time spacing in the telemetry stream varied from a fraction of a second to 3-4 seconds between adjacent data points. Considering that the s/c was nominally nadir pointed for all science data collection periods and three axis stabilized from most other operation regimes, the duration of the longest interval over which the data may be interpolated was set to 60 seconds. For all requests for data falling between two adjacent data points separated by more than 60 seconds the SPICELIB CK readers will return a logical flag stating "POINTING NOT FOUND". A table containing the complete list of valid interpolation intervals in the file is provided at the end of these comments. Angular Rate Data Note -------------------------------------------------------- Data records in this file do not contain actual angular rates computed on-board because the angular rates were not available in all telemetry packets containing quaternions. Instead, the angular rates stored in the file were "manufactured" by MSOPCK program using an assumption that the spacecraft was rotating at a constant rate between each two orientations specified by neighbor quaternions. Usage Note -------------------------------------------------------- In order to use this file an M01 SCLK file containing coefficients mapping M01 on-board time to ET must be loaded into a user's program. Related Kernels -------------------------------------------------------- This file was created using the following LSK and SCLK files: naif0007.tls ORB1_SCLKSCET.00028.tsc Contacts -------------------------------------------------------- If you have any questions regarding this data contact NAIF at JPL: Charles H. Acton, Jr (818)-354-3869 chuck.acton@jpl.nasa.gov Boris V. Semenov (818)-354-8136 boris.semenov@jpl.nasa.gov Appendix 1: List of the original CK files -------------------------------------------------------- m01_sc_2001-12-01.bc m01_sc_2001-12-02.bc m01_sc_2001-12-03.bc m01_sc_2001-12-04.bc m01_sc_2001-12-05.bc m01_sc_2001-12-06.bc m01_sc_2001-12-07.bc m01_sc_2001-12-08.bc m01_sc_2001-12-09.bc m01_sc_2001-12-10.bc m01_sc_2001-12-11.bc m01_sc_2001-12-12.bc m01_sc_2001-12-13.bc m01_sc_2001-12-14.bc m01_sc_2001-12-15.bc m01_sc_2001-12-16.bc m01_sc_2001-12-17.bc m01_sc_2001-12-18.bc m01_sc_2001-12-19.bc m01_sc_2001-12-20.bc m01_sc_2001-12-21.bc m01_sc_2001-12-22.bc m01_sc_2001-12-23.bc m01_sc_2001-12-24.bc m01_sc_2001-12-25.bc m01_sc_2001-12-26.bc m01_sc_2001-12-27.bc m01_sc_2001-12-28.bc m01_sc_2001-12-29.bc m01_sc_2001-12-30.bc m01_sc_2001-12-31.bc Appendix 2: Interpolation Intervals in the File -------------------------------------------------------- The information in this section has been generated by running CKBRIEF utility program using -dump -utc command line options. CKBRIEF Version: 2.0.0, 2001-05-16. SPICE Toolkit Version: N0052a. Summary for: m01_sc_ab0112.bc Segment No.: 1 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-01 00:00:03.726 2001-DEC-01 01:35:39.719 Y 2001-DEC-01 01:36:45.918 2001-DEC-01 01:46:23.718 Y 2001-DEC-01 01:48:39.718 2001-DEC-02 01:36:27.781 Y 2001-DEC-02 01:38:45.780 2001-DEC-02 13:26:31.510 Y 2001-DEC-02 13:28:47.510 2001-DEC-02 20:40:39.667 Y 2001-DEC-02 20:45:09.666 2001-DEC-02 20:46:31.467 Y 2001-DEC-02 20:48:39.666 2001-DEC-03 03:41:51.622 Y 2001-DEC-03 03:46:59.422 2001-DEC-03 08:03:27.593 Y Segment No.: 2 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-03 08:03:27.593 2001-DEC-03 13:21:35.361 Y 2001-DEC-03 13:23:35.361 2001-DEC-04 02:55:35.273 Y 2001-DEC-04 02:58:07.175 2001-DEC-04 21:37:39.165 Y 2001-DEC-04 21:39:45.364 2001-DEC-04 22:43:09.355 Y 2001-DEC-04 22:44:31.160 2001-DEC-04 23:16:39.353 Y 2001-DEC-04 23:18:45.352 2001-DEC-05 16:26:27.244 Y Segment No.: 3 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-05 16:26:27.244 2001-DEC-06 13:16:46.895 Y 2001-DEC-06 13:43:58.889 2001-DEC-06 13:54:06.888 Y 2001-DEC-06 13:56:40.888 2001-DEC-06 14:24:05.687 Y 2001-DEC-06 15:05:06.883 2001-DEC-06 17:08:09.068 Y 2001-DEC-06 17:12:34.865 2001-DEC-06 17:16:27.064 Y 2001-DEC-06 17:17:42.864 2001-DEC-07 12:50:56.928 Y 2001-DEC-07 12:52:02.729 2001-DEC-07 13:16:46.727 Y 2001-DEC-07 13:18:50.726 2001-DEC-08 01:23:26.642 Y Segment No.: 4 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-08 01:23:26.642 2001-DEC-08 12:46:02.560 Y 2001-DEC-08 12:47:37.763 2001-DEC-08 16:47:06.530 Y 2001-DEC-08 16:50:08.733 2001-DEC-10 06:57:38.466 Y Segment No.: 5 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-10 06:57:38.466 2001-DEC-10 12:29:18.233 Y 2001-DEC-10 12:30:30.233 2001-DEC-10 13:06:58.226 Y 2001-DEC-10 13:08:58.226 2001-DEC-10 15:46:02.408 Y 2001-DEC-10 15:53:06.209 2001-DEC-10 18:14:38.393 Y 2001-DEC-10 18:22:32.392 2001-DEC-10 21:37:54.166 Y 2001-DEC-10 21:41:20.369 2001-DEC-11 05:22:50.313 Y 2001-DEC-11 05:24:58.113 2001-DEC-11 21:36:09.994 Y 2001-DEC-11 21:38:01.993 2001-DEC-11 21:43:05.993 Y 2001-DEC-11 21:45:05.993 2001-DEC-11 22:30:02.185 Y 2001-DEC-11 22:34:32.184 2001-DEC-11 22:56:02.183 Y 2001-DEC-11 22:57:13.983 2001-DEC-11 22:59:21.983 Y 2001-DEC-11 23:04:09.979 2001-DEC-12 05:33:05.932 Y 2001-DEC-12 05:36:25.932 2001-DEC-12 08:26:21.911 Y 2001-DEC-12 08:30:20.711 2001-DEC-12 13:01:44.081 Y 2001-DEC-12 13:02:50.080 2001-DEC-12 13:10:17.877 Y Segment No.: 6 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-12 13:10:17.877 2001-DEC-12 17:13:38.053 Y 2001-DEC-12 17:19:20.052 2001-DEC-13 13:02:09.707 Y 2001-DEC-13 13:04:29.707 2001-DEC-13 21:33:09.741 Y 2001-DEC-13 21:39:31.838 2001-DEC-14 12:36:21.532 Y 2001-DEC-14 12:38:07.731 2001-DEC-14 12:57:13.729 Y 2001-DEC-14 12:59:25.530 2001-DEC-14 17:27:25.497 Y Segment No.: 7 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-14 17:27:25.497 2001-DEC-15 16:37:57.315 Y 2001-DEC-15 16:40:21.315 2001-DEC-15 17:41:49.505 Y 2001-DEC-15 17:43:57.306 2001-DEC-15 22:04:45.273 Y 2001-DEC-15 22:06:41.273 2001-DEC-16 20:37:21.091 Y 2001-DEC-16 20:39:25.090 2001-DEC-16 21:59:50.978 Y Segment No.: 8 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-16 21:59:50.978 2001-DEC-17 02:02:29.045 Y 2001-DEC-17 02:04:25.045 2001-DEC-17 12:31:36.159 Y 2001-DEC-17 12:33:04.959 2001-DEC-17 12:52:24.255 Y 2001-DEC-17 12:58:36.953 2001-DEC-18 05:18:28.820 Y 2001-DEC-18 05:20:36.819 2001-DEC-18 12:47:28.751 Y 2001-DEC-18 12:49:48.750 2001-DEC-19 01:22:18.844 Y Segment No.: 9 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-19 01:22:18.844 2001-DEC-19 06:27:00.502 Y 2001-DEC-19 06:28:36.802 2001-DEC-19 20:06:44.492 Y 2001-DEC-19 20:07:48.691 2001-DEC-20 05:18:36.609 Y 2001-DEC-20 05:22:47.609 2001-DEC-20 15:01:38.807 Y 2001-DEC-20 15:04:11.806 2001-DEC-20 15:38:19.202 Y 2001-DEC-20 15:41:32.299 2001-DEC-20 15:59:08.298 Y 2001-DEC-20 19:10:29.962 2001-DEC-21 05:11:48.259 Y 2001-DEC-21 05:13:20.153 2001-DEC-21 05:18:40.153 Y 2001-DEC-21 05:20:48.153 2001-DEC-21 06:20:20.144 Y Segment No.: 10 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-21 06:20:20.144 2001-DEC-22 05:25:51.887 Y 2001-DEC-22 05:29:39.887 2001-DEC-22 05:37:30.085 Y 2001-DEC-22 07:15:47.870 2001-DEC-23 01:09:53.874 Y 2001-DEC-23 01:20:03.674 2001-DEC-23 09:51:59.572 Y Segment No.: 11 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-23 09:51:59.572 2001-DEC-23 12:16:55.544 Y 2001-DEC-23 13:26:05.734 2001-DEC-24 16:45:11.218 Y 2001-DEC-24 16:47:07.218 2001-DEC-24 21:32:03.162 Y 2001-DEC-24 21:33:07.162 2001-DEC-25 05:18:55.072 Y 2001-DEC-25 05:21:10.272 2001-DEC-25 06:44:31.057 Y 2001-DEC-25 06:47:29.256 2001-DEC-25 11:08:47.207 Y 2001-DEC-25 11:43:26.997 2001-DEC-25 12:10:29.194 Y Segment No.: 12 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-25 12:10:29.194 2001-DEC-25 14:12:47.172 Y 2001-DEC-25 14:14:50.969 2001-DEC-25 14:19:14.969 Y 2001-DEC-25 14:24:06.968 2001-DEC-25 14:27:46.968 Y 2001-DEC-25 14:36:58.967 2001-DEC-25 15:27:53.154 Y 2001-DEC-25 15:29:59.154 2001-DEC-25 21:32:06.885 Y 2001-DEC-25 21:36:02.885 2001-DEC-26 04:46:54.802 Y 2001-DEC-26 05:23:26.795 2001-DEC-26 08:09:02.766 Y 2001-DEC-26 08:10:46.066 2001-DEC-26 08:12:34.969 Y 2001-DEC-26 08:14:50.765 2001-DEC-26 08:54:16.961 Y 2001-DEC-26 08:58:10.359 2001-DEC-26 11:59:10.926 Y 2001-DEC-26 12:00:18.723 2001-DEC-26 12:11:46.722 Y 2001-DEC-26 12:16:24.222 2001-DEC-26 21:32:10.816 Y 2001-DEC-26 21:36:04.815 2001-DEC-27 12:03:10.461 Y Segment No.: 13 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-27 12:03:10.461 2001-DEC-27 21:32:14.347 Y 2001-DEC-27 21:33:30.347 2001-DEC-27 21:34:02.347 Y 2001-DEC-27 21:37:22.444 2001-DEC-28 12:33:28.369 Y 2001-DEC-28 12:37:30.170 2001-DEC-28 14:10:02.146 Y 2001-DEC-28 14:12:10.146 2001-DEC-29 10:19:42.100 Y 2001-DEC-29 10:22:33.900 2001-DEC-29 10:39:57.899 Y Segment No.: 14 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-29 10:39:57.899 2001-DEC-29 11:13:57.595 Y 2001-DEC-29 11:16:30.591 2001-DEC-29 11:46:23.389 Y 2001-DEC-29 11:50:13.889 2001-DEC-29 12:07:17.884 Y 2001-DEC-29 12:21:10.082 2001-DEC-29 15:47:41.842 Y 2001-DEC-29 15:50:16.041 2001-DEC-30 05:14:05.684 Y 2001-DEC-30 05:15:27.883 2001-DEC-30 14:19:33.768 Y 2001-DEC-30 14:22:17.568 2001-DEC-31 04:48:32.292 Y 2001-DEC-31 04:50:44.593 2001-DEC-31 05:43:03.585 Y 2001-DEC-31 05:44:39.581 2001-DEC-31 05:44:39.581 Y 2001-DEC-31 05:46:03.581 2001-DEC-31 08:00:18.960 Y Segment No.: 15 Object: -53000 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2001-DEC-31 08:00:18.960 2001-DEC-31 12:18:29.309 Y 2001-DEC-31 12:20:20.610 2001-DEC-31 17:46:27.446 Y 2001-DEC-31 17:50:32.645 2001-DEC-31 19:28:51.426 Y 2001-DEC-31 19:37:41.222 2001-DEC-31 19:56:49.220 Y 2001-DEC-31 19:57:51.419 2001-DEC-31 20:06:41.215 Y 2001-DEC-31 20:08:45.215 2001-DEC-31 23:59:57.368 Y