Orbital elements of COSMOS 1581
| Launched | 2 July 1984 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 15095 |
| 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 Jun 23 17:56 | 2026 Jun 19 21:32:14 | 67.4350 | 0.66775 | 1.1578 | 1.4202 | 359.8830 | 1.99738 | – |
| 2026 Jun 22 17:56 | 2026 Jun 16 21:26:37 | 67.4298 | 0.66778 | 1.1748 | 1.4918 | 359.8830 | 1.99738 | – |
| 2026 Jun 21 17:57 | 2026 Jun 16 21:26:37 | 67.4298 | 0.66778 | 1.1748 | 1.4918 | 359.8830 | 1.99738 | – |
| 2026 Jun 20 17:56 | 2026 Jun 16 21:26:37 | 67.4298 | 0.66778 | 1.1748 | 1.4918 | 359.8830 | 1.99738 | – |
| 2026 Jun 19 17:57 | 2026 Jun 16 21:26:37 | 67.4298 | 0.66778 | 1.1748 | 1.4918 | 359.8830 | 1.99738 | – |
| 2026 Jun 18 17:56 | 2026 Jun 16 21:26:37 | 67.4298 | 0.66778 | 1.1748 | 1.4918 | 359.8830 | 1.99738 | – |
| 2026 Jun 17 17:57 | 2026 Jun 16 21:26:37 | 67.4298 | 0.66778 | 1.1748 | 1.4918 | 359.8830 | 1.99738 | – |
| 2026 Jun 16 17:55 | 2026 Jun 11 21:17:14 | 67.4223 | 0.66783 | 1.2030 | 1.6120 | 359.8830 | 1.99738 | – |
| 2026 Jun 15 17:56 | 2026 Jun 11 21:17:14 | 67.4223 | 0.66783 | 1.2030 | 1.6120 | 359.8830 | 1.99738 | – |
| 2026 Jun 14 17:57 | 2026 Jun 11 21:17:14 | 67.4223 | 0.66783 | 1.2030 | 1.6120 | 359.8830 | 1.99738 | – |
| 2026 Jun 13 17:56 | 2026 Jun 11 21:17:14 | 67.4223 | 0.66783 | 1.2030 | 1.6120 | 359.8830 | 1.99738 | – |
| 2026 Jun 12 17:56 | 2026 Jun 11 21:17:14 | 67.4223 | 0.66783 | 1.2030 | 1.6120 | 359.8830 | 1.99738 | – |
| 2026 Jun 11 17:57 | 2026 Jun 06 21:07:43 | 67.4141 | 0.66788 | 1.2312 | 1.7343 | 359.8830 | 1.99738 | – |
| 2026 Jun 10 17:56 | 2026 Jun 06 21:07:43 | 67.4141 | 0.66788 | 1.2312 | 1.7343 | 359.8830 | 1.99738 | – |
| 2026 Jun 09 17:57 | 2026 Jun 06 21:07:43 | 67.4141 | 0.66788 | 1.2312 | 1.7343 | 359.8830 | 1.99738 | – |
| 2026 Jun 08 17:56 | 2026 Jun 06 21:07:43 | 67.4141 | 0.66788 | 1.2312 | 1.7343 | 359.8830 | 1.99738 | – |
| 2026 Jun 07 17:56 | 2026 Jun 06 21:07:43 | 67.4141 | 0.66788 | 1.2312 | 1.7343 | 359.8830 | 1.99738 | – |
| 2026 Jun 06 17:56 | 2026 May 30 20:54:31 | 67.4019 | 0.66796 | 1.2707 | 1.9055 | 359.8830 | 1.99738 | – |
| 2026 Jun 05 17:56 | 2026 May 30 20:54:31 | 67.4019 | 0.66796 | 1.2707 | 1.9055 | 359.8830 | 1.99738 | – |
| 2026 Jun 04 17:57 | 2026 May 30 20:54:31 | 67.4019 | 0.66796 | 1.2707 | 1.9055 | 359.8830 | 1.99738 | – |
| 2026 Jun 02 17:56 | 2026 May 30 20:54:31 | 67.4019 | 0.66796 | 1.2707 | 1.9055 | 359.8830 | 1.99738 | – |
| 2026 Jun 01 17:57 | 2026 May 30 20:54:31 | 67.4019 | 0.66796 | 1.2707 | 1.9055 | 359.8830 | 1.99738 | – |
| 2026 May 31 17:58 | 2026 May 30 20:54:31 | 67.4019 | 0.66796 | 1.2707 | 1.9055 | 359.8830 | 1.99738 | – |
| 2026 May 30 17:57 | 2026 May 23 08:39:49 | 67.3877 | 0.66806 | 1.3132 | 2.0906 | 359.8830 | 1.99738 | – |
| 2026 May 29 17:57 | 2026 May 23 08:39:49 | 67.3877 | 0.66806 | 1.3132 | 2.0906 | 359.8830 | 1.99738 | – |
| 2026 May 28 17:56 | 2026 May 23 08:39:49 | 67.3877 | 0.66806 | 1.3132 | 2.0906 | 359.8830 | 1.99738 | – |
| 2026 May 27 17:57 | 2026 May 23 08:39:49 | 67.3877 | 0.66806 | 1.3132 | 2.0906 | 359.8830 | 1.99738 | – |