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 |
| 2025 May 09 17:57 | 2025 May 09 04:26:57 | 56.0594 | 0.00860 | 13.9592 | 265.1001 | 115.0852 | 12.48862 | – |
| 2025 May 08 17:56 | 2025 May 03 13:55:18 | 56.0601 | 0.00860 | 14.9654 | 257.3750 | 115.0852 | 12.48862 | – |
| 2025 May 07 17:56 | 2025 May 03 13:55:18 | 56.0601 | 0.00860 | 14.9654 | 257.3750 | 115.0852 | 12.48862 | – |
| 2025 May 06 17:57 | 2025 May 03 13:55:18 | 56.0601 | 0.00860 | 14.9654 | 257.3750 | 115.0852 | 12.48862 | – |
| 2025 May 05 17:56 | 2025 May 03 13:55:18 | 56.0601 | 0.00860 | 14.9654 | 257.3750 | 115.0852 | 12.48862 | – |
| 2025 May 04 17:57 | 2025 May 03 13:55:18 | 56.0601 | 0.00860 | 14.9654 | 257.3750 | 115.0852 | 12.48862 | – |
| 2025 May 03 17:57 | 2025 May 03 13:55:18 | 56.0601 | 0.00860 | 14.9654 | 257.3750 | 115.0852 | 12.48862 | – |
| 2025 May 01 17:56 | 2025 Apr 21 14:14:26 | 56.0596 | 0.00862 | 17.1174 | 240.8980 | 115.0852 | 12.48862 | – |
| 2025 Apr 30 17:56 | 2025 Apr 21 14:14:26 | 56.0596 | 0.00862 | 17.1174 | 240.8980 | 115.0852 | 12.48862 | – |
| 2025 Apr 29 17:57 | 2025 Apr 21 14:14:26 | 56.0596 | 0.00862 | 17.1174 | 240.8980 | 115.0852 | 12.48862 | – |
| 2025 Apr 27 17:56 | 2025 Apr 21 14:14:26 | 56.0596 | 0.00862 | 17.1174 | 240.8980 | 115.0852 | 12.48862 | – |
| 2025 Apr 26 17:57 | 2025 Apr 21 14:14:26 | 56.0596 | 0.00862 | 17.1174 | 240.8980 | 115.0852 | 12.48862 | – |
| 2025 Apr 25 17:56 | 2025 Apr 21 14:14:26 | 56.0596 | 0.00862 | 17.1174 | 240.8980 | 115.0852 | 12.48862 | – |
| 2025 Apr 24 17:56 | 2025 Apr 21 14:14:26 | 56.0596 | 0.00862 | 17.1174 | 240.8980 | 115.0852 | 12.48862 | – |
| 2025 Apr 23 17:57 | 2025 Apr 21 14:14:26 | 56.0596 | 0.00862 | 17.1174 | 240.8980 | 115.0852 | 12.48862 | – |
| 2025 Apr 22 17:56 | 2025 Apr 21 14:14:26 | 56.0596 | 0.00862 | 17.1174 | 240.8980 | 115.0852 | 12.48862 | – |
| 2025 Apr 21 17:57 | 2025 Apr 15 20:10:08 | 56.0595 | 0.00863 | 18.1502 | 233.0114 | 115.0852 | 12.48862 | – |
| 2025 Apr 20 17:56 | 2025 Apr 15 20:10:08 | 56.0595 | 0.00863 | 18.1502 | 233.0114 | 115.0852 | 12.48862 | – |
| 2025 Apr 19 17:56 | 2025 Apr 15 20:10:08 | 56.0595 | 0.00863 | 18.1502 | 233.0114 | 115.0852 | 12.48862 | – |
| 2025 Apr 18 17:57 | 2025 Apr 15 20:10:08 | 56.0595 | 0.00863 | 18.1502 | 233.0114 | 115.0852 | 12.48862 | – |
| 2025 Apr 17 17:56 | 2025 Apr 15 20:10:08 | 56.0595 | 0.00863 | 18.1502 | 233.0114 | 115.0852 | 12.48862 | – |
| 2025 Apr 16 17:57 | 2025 Apr 15 20:10:08 | 56.0595 | 0.00863 | 18.1502 | 233.0114 | 115.0852 | 12.48862 | – |
| 2025 Apr 15 17:56 | 2025 Apr 10 18:48:19 | 56.0598 | 0.00864 | 19.0581 | 226.0894 | 115.0852 | 12.48862 | – |
| 2025 Apr 14 17:56 | 2025 Apr 10 18:48:19 | 56.0598 | 0.00864 | 19.0581 | 226.0894 | 115.0852 | 12.48862 | – |