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 |
| 2025 May 10 17:56 | 2025 May 08 19:23:49 | 66.7301 | 0.67548 | 3.5259 | 10.9611 | 358.3080 | 1.99678 | – |
| 2025 May 09 17:57 | 2025 May 08 19:23:49 | 66.7301 | 0.67548 | 3.5259 | 10.9611 | 358.3080 | 1.99678 | – |
| 2025 May 08 17:56 | 2025 May 03 07:11:02 | 66.7231 | 0.67562 | 3.5592 | 11.0908 | 358.3080 | 1.99678 | – |
| 2025 May 07 17:56 | 2025 May 03 07:11:02 | 66.7231 | 0.67562 | 3.5592 | 11.0908 | 358.3080 | 1.99678 | – |
| 2025 May 06 17:57 | 2025 May 03 07:11:02 | 66.7231 | 0.67562 | 3.5592 | 11.0908 | 358.3080 | 1.99678 | – |
| 2025 May 05 17:56 | 2025 May 03 07:11:02 | 66.7231 | 0.67562 | 3.5592 | 11.0908 | 358.3080 | 1.99678 | – |
| 2025 May 04 17:57 | 2025 May 03 07:11:02 | 66.7231 | 0.67562 | 3.5592 | 11.0908 | 358.3080 | 1.99678 | – |
| 2025 May 03 17:57 | 2025 May 03 07:11:02 | 66.7231 | 0.67562 | 3.5592 | 11.0908 | 358.3080 | 1.99678 | – |
| 2025 May 01 17:56 | 2025 Apr 22 06:46:01 | 66.7113 | 0.67589 | 3.6260 | 11.3357 | 358.3080 | 1.99678 | – |
| 2025 Apr 30 17:56 | 2025 Apr 22 06:46:01 | 66.7113 | 0.67589 | 3.6260 | 11.3357 | 358.3080 | 1.99678 | – |
| 2025 Apr 29 17:57 | 2025 Apr 22 06:46:01 | 66.7113 | 0.67589 | 3.6260 | 11.3357 | 358.3080 | 1.99678 | – |
| 2025 Apr 27 17:56 | 2025 Apr 22 06:46:01 | 66.7113 | 0.67589 | 3.6260 | 11.3357 | 358.3080 | 1.99678 | – |
| 2025 Apr 26 17:57 | 2025 Apr 22 06:46:01 | 66.7113 | 0.67589 | 3.6260 | 11.3357 | 358.3080 | 1.99678 | – |
| 2025 Apr 25 17:56 | 2025 Apr 22 06:46:01 | 66.7113 | 0.67589 | 3.6260 | 11.3357 | 358.3080 | 1.99678 | – |
| 2025 Apr 24 17:56 | 2025 Apr 22 06:46:01 | 66.7113 | 0.67589 | 3.6260 | 11.3357 | 358.3080 | 1.99678 | – |
| 2025 Apr 23 17:57 | 2025 Apr 22 06:46:01 | 66.7113 | 0.67589 | 3.6260 | 11.3357 | 358.3080 | 1.99678 | – |
| 2025 Apr 22 17:56 | 2025 Apr 22 06:46:01 | 66.7113 | 0.67589 | 3.6260 | 11.3357 | 358.3080 | 1.99678 | – |
| 2025 Apr 21 17:57 | 2025 Apr 15 18:31:56 | 66.7058 | 0.67605 | 3.6655 | 11.4746 | 358.3080 | 1.99678 | – |
| 2025 Apr 20 17:56 | 2025 Apr 15 18:31:56 | 66.7058 | 0.67605 | 3.6655 | 11.4746 | 358.3080 | 1.99678 | – |
| 2025 Apr 19 17:56 | 2025 Apr 15 18:31:56 | 66.7058 | 0.67605 | 3.6655 | 11.4746 | 358.3080 | 1.99678 | – |
| 2025 Apr 18 17:57 | 2025 Apr 15 18:31:56 | 66.7058 | 0.67605 | 3.6655 | 11.4746 | 358.3080 | 1.99678 | – |
| 2025 Apr 17 17:56 | 2025 Apr 15 18:31:56 | 66.7058 | 0.67605 | 3.6655 | 11.4746 | 358.3080 | 1.99678 | – |
| 2025 Apr 16 17:57 | 2025 Apr 15 18:31:56 | 66.7058 | 0.67605 | 3.6655 | 11.4746 | 358.3080 | 1.99678 | – |
| 2025 Apr 15 17:56 | 2025 Apr 10 18:21:28 | 66.7006 | 0.67616 | 3.6958 | 11.5794 | 358.3080 | 1.99678 | – |
| 2025 Apr 14 17:56 | 2025 Apr 10 18:21:28 | 66.7006 | 0.67616 | 3.6958 | 11.5794 | 358.3080 | 1.99678 | – |