In the section for files that were replaced, the version numbers that appear in the column headings ("V5","V6") refer to the algorithm reprocessing version. The version numbers listed under the algorithm reprocessing version columns and under the "VERSIONS" column heading refer to the ephemeris file versions. (For example: TSDIS was given three versions of the 06-06-98 ephemeris file. TSDIS used the version 1 file in algorithm version 5 reprocessing and will use the version 2 file in algorithm version 6 reprocessing. JAXA, the Japanese space agency, used the version 2 file in algorithm version 5 reprocessing.)
Ephemeris files are in binary format and so cannot be "displayed" using a web browser. To download a particular ephemeris file, place the mouse arrow over the file version number link under the "VERSIONS" column, bring up a menu, click on "Save Link As..." (for Netscape users), and then enter a local file name for storage.
| DATE | VERSIONS | TSDIS - V5 | JAXA - V5 | TSDIS - V6 | NOTES | ||||
|---|---|---|---|---|---|---|---|---|---|
| 06-06-98 | V1 | V2 | V3 | V1 | V2 | V2 | 06-06-98 | ||
| 07-29-98 | V1 | V2 | V1 | V2 | V2 | 07-29-98 | |||
| 08-27-98 | V1 | V2 | V2 | V2 | V2 | 08-27-98 | |||
| 09-01-98 | V1 | V2 | V2 | V2 | V2 | 09-01-98 | |||
| 09-07-98 | V1 | V2 | V2 | V2 | V2 | 09-07-98 | |||
| 09-12-98 | V1 | V2 | V2 | V2 | V2 | 09-12-98 | |||
| 09-22-98 | V1 | V2 | V2 | V2 | V2 | 09-22-98 | |||
| 09-26-98 | V1 | V2 | V2 | V2 | V2 | 09-26-98 | |||
| 10-01-98 | V1 | V2 | V2 | V2 | V2 | 10-01-98 | |||
| 10-06-98 | V1 | V2 | V2 | V2 | V2 | 10-06-98 | |||
| 10-10-98 | V1 | V2 | V2 | V2 | V2 | 10-10-98 | |||
| 10-15-98 | V1 | V2 | V2 | V2 | V2 | 10-15-98 | |||
| 10-19-98 | V1 | V2 | V2 | V2 | V2 | 10-19-98 | |||
| 10-24-98 | V1 | V2 | V2 | V2 | V2 | 10-24-98 | |||
| 10-30-98 | V1 | V2 | V2 | V2 | V2 | 10-30-98 | |||
| 11-04-98 | V1 | V2 | V2 | V2 | V2 | 11-04-98 | |||
| 11-08-98 | V1 | V2 | V2 | V2 | V2 | 11-08-98 | |||
| 11-11-98 | V1 | V2 | V2 | V2 | V2 | 11-11-98 | |||
| 11-16-98 | V1 | V2 | V2 | V2 | V2 | 11-16-98 | |||
| 11-22-98 | V1 | V2 | V2 | V2 | V2 | 11-22-98 | |||
| 12-31-98 | V1 | V2 | V3 | V3 | V3 | V3 | 12-31-98 | ||
| 01-12-99 | V1 | V2 | V1 | V1 | V1 | 01-12-99 | |||
| 08-26-99 | V1 | V2 | V2 | V2 | V2 | 08-26-99 | |||
| 02-11-00 | V1 | V2 | V1 | V1 | V2 | 02-11-00 | |||
| 02-12-00 | V1 | V2 | V1 | V1 | V2 | 02-12-00 | |||
| 03-15-00 | V1 | V2 | V2 | V2 | V2 | 03-15-00 | |||
| 04-06-00 | V1 | V2 | V2 | V2 | V2 | 04-06-00 | |||
| 05-23-00 | V1 | V2 | V2 | V2 | V2 | 05-23-00 | |||
| 06-23-00 | V1 | V2 | V2 | V2 | V2 | 06-23-00 | |||
| 06-30-00 | V1 | V2 | V3 | V4 | V5 | V5 | V5 | V5 | 06-30-00 |
| 07-01-00 | V1 | V2 | V3 | V4 | V4 | V4 | V4 | 07-01-00 | |
| 07-02-00 | V1 | V2 | V3 | V4 | V4 | V4 | V4 | 07-02-00 | |
| 07-03-00 | V1 | V2 | V3 | V3 | V3 | V3 | 07-03-00 | ||
| 07-04-00 | V1 | V2 | V3 | V3 | V3 | V3 | 07-04-00 | ||
| 08-13-00 | V1 | V2 | V2 | V2 | V2 | 08-13-00 | |||
| 11-23-00 | V1 | V2 | V3 | V1 | V1 | V1 | 11-23-00 | ||
| 11-24-00 | V1 | V2 | V2 | V2 | V2 | 11-24-00 | |||
| 04-05-01 | V1 | V2 | V2 | V2 | V2 | 04-05-01 | |||
| 08-07-01 | V1 | V2 | V1 | V1 | V2 | 08-07-01 | |||
| 08-11-01 | V1 | V2 | V1 | V1 | V2 | 08-11-01 | |||
| DATE | MINOR FLAW | NOTES |
|---|---|---|
| descent | one ephemeris file (descent.definitive) for 11-27-97 to 12-06-97 | descent |
| 12-07-97 | epoch, start, and GHA times not aligned. duplicate of 12-06-97 ephemeris data (descent.definitive) | 12-07-97 |
| 12-08-97 | along track error of -4.147 km at overlap with 12-07-97 ephemeris file | 12-08-97 |
| 07-16-98 | minor single point inconsistancy in x-pos, y-pos (-1.09 km), and z-pos | 07-16-98 |
| 08-21-98 | minor single point inconsistancy in x-pos, y-pos (-1.65 km), z-pos, and z-dot | 08-21-98 |
| 08-27-98 | (Version 2) epoch, start, and GHA times not aligned. minor single point inconsistancy in y-pos and z-pos | 08-27-98 |
| 09-01-98 | (Version 2) epoch, start, and GHA times not aligned | 09-01-98 |
| 09-07-98 | (Version 2) epoch, start, and GHA times not aligned | 09-07-98 |
| 09-12-98 | (Version 2) epoch, start, and GHA times not aligned | 09-12-98 |
| 09-14-98 | along track & radial errors of -0.793 & -0.127 km at overlap with 09-13-98 ephemeris file | 09-14-98 |
| 09-15-98 | radial error of 0.109 km at overlap with 09-14-98 ephemeris file | 09-15-98 |
| 09-18-98 | minor single point inconsistancy in x-dot | 09-18-98 |
| 09-22-98 | (Version 2) epoch, start, and GHA times not aligned | 09-22-98 |
| 09-25-98 | along track error of -0.619 km at overlap with 09-24-98 ephemeris file | 09-25-98 |
| 09-26-98 | (Version 2) epoch, start, and GHA times not aligned | 09-26-98 |
| 10-01-98 | (Version 2) epoch, start, and GHA times not aligned | 10-01-98 |
| 10-06-98 | (Version 2) epoch, start, and GHA times not aligned | 10-06-98 |
| 10-10-98 | (Version 2) epoch, start, and GHA times not aligned | 10-10-98 |
| 10-15-98 | (Version 2) epoch, start, and GHA times not aligned | 10-15-98 |
| 10-19-98 | (Version 2) epoch, start, and GHA times not aligned | 10-19-98 |
| 10-24-98 | (Version 2) epoch, start, and GHA times not aligned | 10-24-98 |
| 10-30-98 | (Version 2) epoch, start, and GHA times not aligned | 10-30-98 |
| 11-04-98 | (Version 2) epoch, start, and GHA times not aligned | 11-04-98 |
| 11-08-98 | (Version 2) epoch, start, and GHA times not aligned. minor single point inconsistancy in x-pos and z-pos | 11-08-98 |
| 11-11-98 | (Version 2) epoch, start, and GHA times not aligned | 11-11-98 |
| 11-13-98 | radial error of 0.152 km at overlap with 11-12-98 ephemeris file | 11-13-98 |
| 11-14-98 | radial error of -0.149 km at overlap with 11-13-98 ephemeris file | 11-14-98 |
| 11-16-98 | (Version 2) epoch, start, and GHA times not aligned | 11-16-98 |
| 11-22-98 | (Version 2) epoch, start, and GHA times not aligned | 11-22-98 |
| 12-09-98 | minor single point inconsistancy in x-pos | 12-09-98 |
| 12-31-98 | (Version 3) along track error of 0.501 km at overlap with 12-30-98 ephemeris file | 12-31-98 |
| 01-13-99 | along track error of 0.919 km at overlap with 01-12-99 ephemeris file | 01-13-99 |
| 01-20-99 | minor single point inconsistancy in y-dot | 01-20-99 |
| 01-29-99 | minor single point inconsistancy in y-pos | 01-29-99 |
| 03-10-99 | minor single point inconsistancy in y-pos | 03-10-99 |
| 04-02-99 | minor single point inconsistancy in y-pos | 04-02-99 |
| 08-18-99 | minor single point inconsistancy in y-pos | 08-18-99 |
| 09-05-99 | along track error of 0.708 km at overlap with 09-04-99 ephemeris file | 09-05-99 |
| 09-30-99 | minor single point inconsistancy in x-pos | 09-30-99 |
| 10-03-99 | along track error of -0.584 km at overlap with 10-02-99 ephemeris file | 10-03-99 |
| 10-22-99 | radial error of -0.112 km at overlap with 10-21-99 ephemeris file | 10-22-99 |
| 10-23-99 | minor single point inconsistancy in x-pos | 10-23-99 |
| 11-24-99 | along track error of -0.559 km at overlap with 11-23-99 ephemeris file | 11-24-99 |
| 12-04-99 | along track error of -0.564 km at overlap with 12-03-99 ephemeris file | 12-04-99 |
| 12-25-99 | along track error of -0.630 km at overlap with 12-24-99 ephemeris file | 12-25-99 |
| 01-28-00 | along track error of -0.514 km at overlap with 01-27-00 ephemeris file | 01-28-00 |
| 01-29-00 | minor single point inconsistancy in y-pos | 01-29-00 |
| 02-19-00 | minor single point inconsistancy in y-pos | 02-19-00 |
| 03-24-00 | minor single point inconsistancy in x-dot | 03-24-00 |
| 03-26-00 | minor single point inconsistancy in z-pos | 03-26-00 |
| 04-17-00 | minor single point inconsistancy in x-pos | 04-17-00 |
| 05-03-00 | minor single point inconsistancy in x-pos | 05-03-00 |
| 05-26-00 | minor single point inconsistancy in x-pos | 05-26-00 |
| 06-12-00 | minor single point inconsistancy in y-pos | 06-12-00 |
| 07-17-00 | radial error of -0.118 km at overlap with 07-16-00 ephemeris file | 07-17-00 |
| 08-12-00 | minor single point inconsistancy in x-pos | 08-12-00 |
| 08-18-00 | minor single point inconsistancy in y-pos | 08-18-00 |
| 10-14-00 | along track error of -0.566 km at overlap with 10-13-00 ephemeris file | 10-14-00 |
| 10-28-00 | minor single point inconsistancy in x-dot | 10-28-00 |
| 02-12-01 | minor single point inconsistancy in x-pos | 02-12-01 |
| 02-18-01 | minor single point inconsistancy in y-pos | 02-18-01 |
| 03-18-01 | minor single point inconsistancy in y-pos | 03-18-01 |
| 03-31-01 | minor single point inconsistancy in x-pos, y-pos, and z-pos | 03-31-01 |
| 04-01-01 | minor inconsistency between the 3/31/01 and 4/1/01 ephemeris files | 04-01-01 |
| 04-12-01 | minor single point inconsistancy in x-pos | 04-12-01 |
Responsible NASA Official: Erich Stocker, Code 610, NASA/GSFC
This page is maintained by Michael Hensley, RSIS / RS Information Systems Inc.
Last updated: November 6, 2006