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 |
| 2025 Jun 04 17:57 | 2025 Jun 01 13:33:28 | 87.6349 | 0.00804 | 11.6842 | 326.8740 | 32.7429 | 14.18118 | 6.743 |
| 2025 Jun 03 17:57 | 2025 Jun 01 13:33:28 | 87.6349 | 0.00804 | 11.6842 | 326.8740 | 32.7429 | 14.18118 | 6.743 |
| 2025 Jun 02 17:58 | 2025 Jun 01 13:33:28 | 87.6349 | 0.00804 | 11.6842 | 326.8740 | 32.7429 | 14.18118 | 6.743 |
| 2025 Jun 01 17:56 | 2025 Jun 01 13:33:28 | 87.6349 | 0.00804 | 11.6842 | 326.8740 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 31 17:56 | 2025 May 25 18:59:16 | 87.6356 | 0.00811 | 11.8049 | 348.8777 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 30 17:56 | 2025 May 25 18:59:16 | 87.6356 | 0.00811 | 11.8049 | 348.8777 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 29 17:56 | 2025 May 25 18:59:16 | 87.6356 | 0.00811 | 11.8049 | 348.8777 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 28 17:56 | 2025 May 25 18:59:16 | 87.6356 | 0.00811 | 11.8049 | 348.8777 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 27 17:57 | 2025 May 25 18:59:16 | 87.6356 | 0.00811 | 11.8049 | 348.8777 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 26 17:56 | 2025 May 25 18:59:16 | 87.6356 | 0.00811 | 11.8049 | 348.8777 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 25 17:56 | 2025 May 21 13:22:53 | 87.6359 | 0.00817 | 11.8802 | 2.5135 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 24 17:57 | 2025 May 21 13:22:53 | 87.6359 | 0.00817 | 11.8802 | 2.5135 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 23 17:56 | 2025 May 21 13:22:53 | 87.6359 | 0.00817 | 11.8802 | 2.5135 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 22 17:56 | 2025 May 21 13:22:53 | 87.6359 | 0.00817 | 11.8802 | 2.5135 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 21 17:56 | 2025 May 21 13:22:53 | 87.6359 | 0.00817 | 11.8802 | 2.5135 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 20 17:56 | 2025 May 15 13:26:21 | 87.6366 | 0.00824 | 11.9870 | 21.7075 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 19 17:56 | 2025 May 15 13:26:21 | 87.6366 | 0.00824 | 11.9870 | 21.7075 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 18 17:57 | 2025 May 15 13:26:21 | 87.6366 | 0.00824 | 11.9870 | 21.7075 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 17 17:57 | 2025 May 15 13:26:21 | 87.6366 | 0.00824 | 11.9870 | 21.7075 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 16 17:56 | 2025 May 15 13:26:21 | 87.6366 | 0.00824 | 11.9870 | 21.7075 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 15 17:57 | 2025 May 15 13:26:21 | 87.6366 | 0.00824 | 11.9870 | 21.7075 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 14 17:56 | 2025 May 09 03:20:10 | 87.6375 | 0.00831 | 12.1012 | 42.0767 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 13 17:56 | 2025 May 09 03:20:10 | 87.6375 | 0.00831 | 12.1012 | 42.0767 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 12 17:56 | 2025 May 09 03:20:10 | 87.6375 | 0.00831 | 12.1012 | 42.0767 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 11 17:56 | 2025 May 09 03:20:10 | 87.6375 | 0.00831 | 12.1012 | 42.0767 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 10 17:56 | 2025 May 09 03:20:10 | 87.6375 | 0.00831 | 12.1012 | 42.0767 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 09 17:57 | 2025 May 09 03:20:10 | 87.6375 | 0.00831 | 12.1012 | 42.0767 | 32.7429 | 14.18118 | 6.743 |
| 2025 May 08 17:56 | 2025 May 03 13:33:13 | 87.6382 | 0.00836 | 12.2004 | 59.6092 | 32.7429 | 14.18118 | 6.743 |