Orbital elements of OV1-21
| Launched | 6 August 1971 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 5397 |
| 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 |
| 2026 Jul 20 17:57 | 2026 Jul 16 03:36:42 | 87.6238 | 0.00837 | 4.3689 | 89.1689 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 19 19:06 | 2026 Jul 16 03:36:42 | 87.6238 | 0.00837 | 4.3689 | 89.1689 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 19 17:57 | 2026 Jul 16 03:36:42 | 87.6238 | 0.00837 | 4.3689 | 89.1689 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 18 17:57 | 2026 Jul 16 03:36:42 | 87.6238 | 0.00837 | 4.3689 | 89.1689 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 17 17:57 | 2026 Jul 16 03:36:42 | 87.6238 | 0.00837 | 4.3689 | 89.1689 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 16 17:56 | 2026 Jul 16 03:36:42 | 87.6238 | 0.00837 | 4.3689 | 89.1689 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 15 17:57 | 2026 Jul 11 01:41:36 | 87.6245 | 0.00837 | 4.4599 | 105.0453 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 14 17:56 | 2026 Jul 11 01:41:36 | 87.6245 | 0.00837 | 4.4599 | 105.0453 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 13 17:56 | 2026 Jul 11 01:41:36 | 87.6245 | 0.00837 | 4.4599 | 105.0453 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 12 17:56 | 2026 Jul 11 01:41:36 | 87.6245 | 0.00837 | 4.4599 | 105.0453 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 11 17:56 | 2026 Jul 11 01:41:36 | 87.6245 | 0.00837 | 4.4599 | 105.0453 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 09 17:56 | 2026 Jul 05 01:45:42 | 87.6252 | 0.00833 | 4.5673 | 123.8587 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 08 17:56 | 2026 Jul 05 01:45:42 | 87.6252 | 0.00833 | 4.5673 | 123.8587 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 07 17:56 | 2026 Jul 05 01:45:42 | 87.6252 | 0.00833 | 4.5673 | 123.8587 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 06 17:57 | 2026 Jul 05 01:45:42 | 87.6252 | 0.00833 | 4.5673 | 123.8587 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 05 17:56 | 2026 Jul 05 01:45:42 | 87.6252 | 0.00833 | 4.5673 | 123.8587 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 04 17:56 | 2026 Jun 29 03:31:21 | 87.6259 | 0.00828 | 4.6734 | 142.5547 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 03 17:57 | 2026 Jun 29 03:31:21 | 87.6259 | 0.00828 | 4.6734 | 142.5547 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 02 17:56 | 2026 Jun 29 03:31:21 | 87.6259 | 0.00828 | 4.6734 | 142.5547 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jul 01 17:56 | 2026 Jun 29 03:31:21 | 87.6259 | 0.00828 | 4.6734 | 142.5547 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jun 30 17:56 | 2026 Jun 29 03:31:21 | 87.6259 | 0.00828 | 4.6734 | 142.5547 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jun 29 17:57 | 2026 Jun 29 03:31:21 | 87.6259 | 0.00828 | 4.6734 | 142.5547 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jun 28 17:56 | 2026 Jun 22 10:39:23 | 87.6264 | 0.00820 | 4.7934 | 163.8677 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jun 27 17:55 | 2026 Jun 22 10:39:23 | 87.6264 | 0.00820 | 4.7934 | 163.8677 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jun 26 17:56 | 2026 Jun 22 10:39:23 | 87.6264 | 0.00820 | 4.7934 | 163.8677 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jun 25 17:56 | 2026 Jun 22 10:39:23 | 87.6264 | 0.00820 | 4.7934 | 163.8677 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jun 24 17:55 | 2026 Jun 22 10:39:23 | 87.6264 | 0.00820 | 4.7934 | 163.8677 | 271.9089 | 14.18239 | 6.743 |
| 2026 Jun 23 17:56 | 2026 Jun 22 10:39:23 | 87.6264 | 0.00820 | 4.7934 | 163.8677 | 271.9089 | 14.18239 | 6.743 |