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 Dec 19 18:57 | 2025 Dec 12 07:41:39 | 87.6293 | 0.00835 | 8.2309 | 63.5338 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 18 18:57 | 2025 Dec 12 07:41:39 | 87.6293 | 0.00835 | 8.2309 | 63.5338 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 17 18:58 | 2025 Dec 12 07:41:39 | 87.6293 | 0.00835 | 8.2309 | 63.5338 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 16 18:57 | 2025 Dec 12 07:41:39 | 87.6293 | 0.00835 | 8.2309 | 63.5338 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 15 18:58 | 2025 Dec 12 07:41:39 | 87.6293 | 0.00835 | 8.2309 | 63.5338 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 14 18:56 | 2025 Dec 12 07:41:39 | 87.6293 | 0.00835 | 8.2309 | 63.5338 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 13 18:56 | 2025 Dec 12 07:41:39 | 87.6293 | 0.00835 | 8.2309 | 63.5338 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 12 18:57 | 2025 Dec 12 07:41:39 | 87.6293 | 0.00835 | 8.2309 | 63.5338 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 11 18:56 | 2025 Dec 07 04:04:41 | 87.6290 | 0.00837 | 8.3229 | 79.6870 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 10 18:56 | 2025 Dec 07 04:04:41 | 87.6290 | 0.00837 | 8.3229 | 79.6870 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 09 18:56 | 2025 Dec 07 04:04:41 | 87.6290 | 0.00837 | 8.3229 | 79.6870 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 08 18:56 | 2025 Dec 07 04:04:41 | 87.6290 | 0.00837 | 8.3229 | 79.6870 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 07 18:56 | 2025 Dec 07 04:04:41 | 87.6290 | 0.00837 | 8.3229 | 79.6870 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 06 18:56 | 2025 Dec 02 10:37:19 | 87.6287 | 0.00837 | 8.4073 | 94.4673 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 05 18:57 | 2025 Dec 02 10:37:19 | 87.6287 | 0.00837 | 8.4073 | 94.4673 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 04 18:57 | 2025 Dec 02 10:37:19 | 87.6287 | 0.00837 | 8.4073 | 94.4673 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 03 18:56 | 2025 Dec 02 10:37:19 | 87.6287 | 0.00837 | 8.4073 | 94.4673 | 297.4380 | 14.18181 | 6.743 |
| 2025 Dec 02 18:56 | 2025 Dec 02 10:37:19 | 87.6287 | 0.00837 | 8.4073 | 94.4673 | 297.4380 | 14.18181 | 6.743 |
| 2025 Nov 30 18:57 | 2025 Nov 25 10:58:36 | 87.6279 | 0.00835 | 8.5321 | 116.3305 | 297.4380 | 14.18181 | 6.743 |
| 2025 Nov 29 18:56 | 2025 Nov 25 10:58:36 | 87.6279 | 0.00835 | 8.5321 | 116.3305 | 297.4380 | 14.18181 | 6.743 |
| 2025 Nov 28 18:57 | 2025 Nov 25 10:58:36 | 87.6279 | 0.00835 | 8.5321 | 116.3305 | 297.4380 | 14.18181 | 6.743 |
| 2025 Nov 27 18:57 | 2025 Nov 25 10:58:36 | 87.6279 | 0.00835 | 8.5321 | 116.3305 | 297.4380 | 14.18181 | 6.743 |
| 2025 Nov 26 18:57 | 2025 Nov 25 10:58:36 | 87.6279 | 0.00835 | 8.5321 | 116.3305 | 297.4380 | 14.18181 | 6.743 |
| 2025 Nov 25 18:57 | 2025 Nov 25 10:58:36 | 87.6279 | 0.00835 | 8.5321 | 116.3305 | 297.4380 | 14.18181 | 6.743 |
| 2025 Nov 24 18:56 | 2025 Nov 20 03:58:19 | 87.6279 | 0.00832 | 8.6266 | 132.9867 | 297.4380 | 14.18181 | 6.743 |
| 2025 Nov 23 18:57 | 2025 Nov 20 03:58:19 | 87.6279 | 0.00832 | 8.6266 | 132.9867 | 297.4380 | 14.18181 | 6.743 |