Orbital elements of NAVSTAR 21
| Launched | 30 September 1990 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 20830 |
| Alternative names |
USA 64 GPS BII-09 SVN 15 |
| Date fetched |
Epoch osculation |
Inc. [°] |
Ecc. | RA asc node [hr] |
Arg Peri. [°] |
Mean anom [°] |
Mean motion [rev/day] |
Abs. mag |
| Date fetched |
Epoch osculation |
Inc. [°] |
Ecc. | RA asc node [hr] |
Arg Peri. [°] |
Mean anom [°] |
Mean motion [rev/day] |
Abs. mag |
| 2025 Sep 15 17:56 | 2025 Sep 15 02:01:40 | 56.3642 | 0.00217 | 1.2807 | 284.1936 | 72.4571 | 1.87753 | – |
| 2025 Sep 12 17:57 | 2025 Sep 02 20:21:15 | 56.3586 | 0.00218 | 1.3083 | 284.2310 | 72.4571 | 1.87753 | – |
| 2025 Sep 11 17:57 | 2025 Sep 02 20:21:15 | 56.3586 | 0.00218 | 1.3083 | 284.2310 | 72.4571 | 1.87753 | – |
| 2025 Sep 10 17:56 | 2025 Sep 02 20:21:15 | 56.3586 | 0.00218 | 1.3083 | 284.2310 | 72.4571 | 1.87753 | – |
| 2025 Sep 08 17:57 | 2025 Sep 02 20:21:15 | 56.3586 | 0.00218 | 1.3083 | 284.2310 | 72.4571 | 1.87753 | – |
| 2025 Sep 07 17:56 | 2025 Sep 02 20:21:15 | 56.3586 | 0.00218 | 1.3083 | 284.2310 | 72.4571 | 1.87753 | – |
| 2025 Sep 06 20:41 | 2025 Sep 02 20:21:15 | 56.3586 | 0.00218 | 1.3083 | 284.2310 | 72.4571 | 1.87753 | – |
| 2025 Sep 03 17:57 | 2025 Sep 02 20:21:15 | 56.3586 | 0.00218 | 1.3083 | 284.2310 | 72.4571 | 1.87753 | – |
| 2025 Sep 02 17:56 | 2025 Aug 25 07:26:56 | 56.3548 | 0.00217 | 1.3275 | 284.4265 | 72.4571 | 1.87753 | – |
| 2025 Sep 01 17:56 | 2025 Aug 25 07:26:56 | 56.3548 | 0.00217 | 1.3275 | 284.4265 | 72.4571 | 1.87753 | – |
| 2025 Aug 31 17:56 | 2025 Aug 25 07:26:56 | 56.3548 | 0.00217 | 1.3275 | 284.4265 | 72.4571 | 1.87753 | – |
| 2025 Aug 30 17:56 | 2025 Aug 25 07:26:56 | 56.3548 | 0.00217 | 1.3275 | 284.4265 | 72.4571 | 1.87753 | – |
| 2025 Aug 29 17:56 | 2025 Aug 25 07:26:56 | 56.3548 | 0.00217 | 1.3275 | 284.4265 | 72.4571 | 1.87753 | – |
| 2025 Aug 28 17:57 | 2025 Aug 25 07:26:56 | 56.3548 | 0.00217 | 1.3275 | 284.4265 | 72.4571 | 1.87753 | – |
| 2025 Aug 27 17:56 | 2025 Aug 20 11:57:27 | 56.3526 | 0.00216 | 1.3384 | 284.4006 | 72.4571 | 1.87753 | – |
| 2025 Aug 26 17:56 | 2025 Aug 20 11:57:27 | 56.3526 | 0.00216 | 1.3384 | 284.4006 | 72.4571 | 1.87753 | – |
| 2025 Aug 25 17:56 | 2025 Aug 20 11:57:27 | 56.3526 | 0.00216 | 1.3384 | 284.4006 | 72.4571 | 1.87753 | – |
| 2025 Aug 24 17:56 | 2025 Aug 20 11:57:27 | 56.3526 | 0.00216 | 1.3384 | 284.4006 | 72.4571 | 1.87753 | – |
| 2025 Aug 23 17:56 | 2025 Aug 20 11:57:27 | 56.3526 | 0.00216 | 1.3384 | 284.4006 | 72.4571 | 1.87753 | – |
| 2025 Aug 22 17:56 | 2025 Aug 12 14:16:33 | 56.3488 | 0.00216 | 1.3562 | 284.4849 | 72.4571 | 1.87753 | – |