Orbital elements of COSMOS 81
| Launched | 2 September 1965 |
| Flight ended | – |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 1571 |
| 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 Apr 29 17:57 | 2026 Apr 24 08:28:08 | 56.0625 | 0.00884 | 23.0932 | 17.5572 | 155.5010 | 12.48868 | – |
| 2026 Apr 28 17:56 | 2026 Apr 24 08:28:08 | 56.0625 | 0.00884 | 23.0932 | 17.5572 | 155.5010 | 12.48868 | – |
| 2026 Apr 27 17:58 | 2026 Apr 24 08:28:08 | 56.0625 | 0.00884 | 23.0932 | 17.5572 | 155.5010 | 12.48868 | – |
| 2026 Apr 26 17:58 | 2026 Apr 24 08:28:08 | 56.0625 | 0.00884 | 23.0932 | 17.5572 | 155.5010 | 12.48868 | – |
| 2026 Apr 25 17:58 | 2026 Apr 24 08:28:08 | 56.0625 | 0.00884 | 23.0932 | 17.5572 | 155.5010 | 12.48868 | – |
| 2026 Apr 24 17:59 | 2026 Apr 24 08:28:08 | 56.0625 | 0.00884 | 23.0932 | 17.5572 | 155.5010 | 12.48868 | – |
| 2026 Apr 23 17:57 | 2026 Apr 19 11:16:17 | 56.0630 | 0.00882 | 23.9698 | 11.0036 | 155.5010 | 12.48868 | – |
| 2026 Apr 22 17:57 | 2026 Apr 19 11:16:17 | 56.0630 | 0.00882 | 23.9698 | 11.0036 | 155.5010 | 12.48868 | – |
| 2026 Apr 21 17:57 | 2026 Apr 19 11:16:17 | 56.0630 | 0.00882 | 23.9698 | 11.0036 | 155.5010 | 12.48868 | – |
| 2026 Apr 20 17:57 | 2026 Apr 19 11:16:17 | 56.0630 | 0.00882 | 23.9698 | 11.0036 | 155.5010 | 12.48868 | – |
| 2026 Apr 19 17:58 | 2026 Apr 19 11:16:17 | 56.0630 | 0.00882 | 23.9698 | 11.0036 | 155.5010 | 12.48868 | – |
| 2026 Apr 18 17:56 | 2026 Apr 13 05:20:50 | 56.0632 | 0.00879 | 1.0913 | 2.6162 | 155.5010 | 12.48868 | – |
| 2026 Apr 16 17:57 | 2026 Apr 13 05:20:50 | 56.0632 | 0.00879 | 1.0913 | 2.6162 | 155.5010 | 12.48868 | – |
| 2026 Apr 14 17:57 | 2026 Apr 13 05:20:50 | 56.0632 | 0.00879 | 1.0913 | 2.6162 | 155.5010 | 12.48868 | – |
| 2026 Apr 13 17:57 | 2026 Apr 13 05:20:50 | 56.0632 | 0.00879 | 1.0913 | 2.6162 | 155.5010 | 12.48868 | – |
| 2026 Apr 12 17:57 | 2026 Apr 08 06:13:03 | 56.0629 | 0.00877 | 1.9824 | 355.8970 | 155.5010 | 12.48868 | – |
| 2026 Apr 11 17:57 | 2026 Apr 08 06:13:03 | 56.0629 | 0.00877 | 1.9824 | 355.8970 | 155.5010 | 12.48868 | – |
| 2026 Apr 10 17:58 | 2026 Apr 08 06:13:03 | 56.0629 | 0.00877 | 1.9824 | 355.8970 | 155.5010 | 12.48868 | – |
| 2026 Apr 09 18:01 | 2026 Apr 08 06:13:03 | 56.0629 | 0.00877 | 1.9824 | 355.8970 | 155.5010 | 12.48868 | – |
| 2026 Apr 08 17:57 | 2026 Apr 08 06:13:03 | 56.0629 | 0.00877 | 1.9824 | 355.8970 | 155.5010 | 12.48868 | – |
| 2026 Apr 07 17:57 | 2026 Apr 02 06:03:53 | 56.0619 | 0.00874 | 3.0606 | 347.7725 | 155.5010 | 12.48868 | – |
| 2026 Apr 06 17:57 | 2026 Apr 02 06:03:53 | 56.0619 | 0.00874 | 3.0606 | 347.7725 | 155.5010 | 12.48868 | – |
| 2026 Apr 05 17:56 | 2026 Apr 02 06:03:53 | 56.0619 | 0.00874 | 3.0606 | 347.7725 | 155.5010 | 12.48868 | – |
| 2026 Apr 04 17:57 | 2026 Apr 02 06:03:53 | 56.0619 | 0.00874 | 3.0606 | 347.7725 | 155.5010 | 12.48868 | – |
| 2026 Apr 03 17:56 | 2026 Apr 02 06:03:53 | 56.0619 | 0.00874 | 3.0606 | 347.7725 | 155.5010 | 12.48868 | – |
| 2026 Apr 02 18:03 | 2026 Apr 02 06:03:53 | 56.0619 | 0.00874 | 3.0606 | 347.7725 | 155.5010 | 12.48868 | – |