Orbital elements of COSMOS 1877
| Launched | 6 September 1987 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18336 |
| 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 Jun 30 17:56 | 2025 Jun 28 11:35:44 | 82.5631 | 0.00031 | 10.9597 | 97.4580 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 29 17:56 | 2025 Jun 28 11:35:44 | 82.5631 | 0.00031 | 10.9597 | 97.4580 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 28 17:56 | 2025 Jun 28 11:35:44 | 82.5631 | 0.00031 | 10.9597 | 97.4580 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 27 17:56 | 2025 Jun 22 17:08:37 | 82.5630 | 0.00030 | 11.2061 | 105.2557 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 26 17:56 | 2025 Jun 22 17:08:37 | 82.5630 | 0.00030 | 11.2061 | 105.2557 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 25 17:56 | 2025 Jun 22 17:08:37 | 82.5630 | 0.00030 | 11.2061 | 105.2557 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 24 17:56 | 2025 Jun 22 17:08:37 | 82.5630 | 0.00030 | 11.2061 | 105.2557 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 23 17:56 | 2025 Jun 22 17:08:37 | 82.5630 | 0.00030 | 11.2061 | 105.2557 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 22 17:56 | 2025 Jun 17 09:47:44 | 82.5625 | 0.00029 | 11.4327 | 112.9049 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 21 17:56 | 2025 Jun 17 09:47:44 | 82.5625 | 0.00029 | 11.4327 | 112.9049 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 20 17:57 | 2025 Jun 17 09:47:44 | 82.5625 | 0.00029 | 11.4327 | 112.9049 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 19 17:56 | 2025 Jun 17 09:47:44 | 82.5625 | 0.00029 | 11.4327 | 112.9049 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 18 17:56 | 2025 Jun 17 09:47:44 | 82.5625 | 0.00029 | 11.4327 | 112.9049 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 17 17:56 | 2025 Jun 17 09:47:44 | 82.5625 | 0.00029 | 11.4327 | 112.9049 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 16 17:56 | 2025 Jun 12 13:38:39 | 82.5626 | 0.00028 | 11.6395 | 119.9305 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 15 17:56 | 2025 Jun 12 13:38:39 | 82.5626 | 0.00028 | 11.6395 | 119.9305 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 14 17:56 | 2025 Jun 12 13:38:39 | 82.5626 | 0.00028 | 11.6395 | 119.9305 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 13 17:56 | 2025 Jun 12 13:38:39 | 82.5626 | 0.00028 | 11.6395 | 119.9305 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 12 17:56 | 2025 Jun 12 13:38:39 | 82.5626 | 0.00028 | 11.6395 | 119.9305 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 11 17:56 | 2025 Jun 05 14:26:08 | 82.5629 | 0.00026 | 11.9371 | 130.3113 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 10 17:56 | 2025 Jun 05 14:26:08 | 82.5629 | 0.00026 | 11.9371 | 130.3113 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 09 17:56 | 2025 Jun 05 14:26:08 | 82.5629 | 0.00026 | 11.9371 | 130.3113 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 08 17:56 | 2025 Jun 05 14:26:08 | 82.5629 | 0.00026 | 11.9371 | 130.3113 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 07 17:56 | 2025 Jun 05 14:26:08 | 82.5629 | 0.00026 | 11.9371 | 130.3113 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 06 17:56 | 2025 Jun 05 14:26:08 | 82.5629 | 0.00026 | 11.9371 | 130.3113 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 05 17:56 | 2025 Jun 01 13:41:30 | 82.5633 | 0.00025 | 12.1093 | 135.8297 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 04 17:57 | 2025 Jun 01 13:41:30 | 82.5633 | 0.00025 | 12.1093 | 135.8297 | 26.7000 | 12.63651 | 7.743 |
| 2025 Jun 03 17:57 | 2025 Jun 01 13:41:30 | 82.5633 | 0.00025 | 12.1093 | 135.8297 | 26.7000 | 12.63651 | 7.743 |