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 Oct 27 18:57 | 2025 Oct 23 23:29:12 | 82.5598 | 0.00017 | 5.9395 | 172.1028 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 26 18:57 | 2025 Oct 23 23:29:12 | 82.5598 | 0.00017 | 5.9395 | 172.1028 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 25 17:57 | 2025 Oct 23 23:29:12 | 82.5598 | 0.00017 | 5.9395 | 172.1028 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 24 17:57 | 2025 Oct 23 23:29:12 | 82.5598 | 0.00017 | 5.9395 | 172.1028 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 22 17:56 | 2025 Oct 18 05:02:14 | 82.5590 | 0.00015 | 6.1861 | 184.8025 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 21 17:56 | 2025 Oct 18 05:02:14 | 82.5590 | 0.00015 | 6.1861 | 184.8025 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 20 17:56 | 2025 Oct 18 05:02:14 | 82.5590 | 0.00015 | 6.1861 | 184.8025 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 19 17:56 | 2025 Oct 18 05:02:14 | 82.5590 | 0.00015 | 6.1861 | 184.8025 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 18 17:56 | 2025 Oct 18 05:02:14 | 82.5590 | 0.00015 | 6.1861 | 184.8025 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 17 17:56 | 2025 Oct 07 11:40:48 | 82.5586 | 0.00010 | 6.6445 | 213.9744 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 16 17:56 | 2025 Oct 07 11:40:48 | 82.5586 | 0.00010 | 6.6445 | 213.9744 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 15 17:56 | 2025 Oct 07 11:40:48 | 82.5586 | 0.00010 | 6.6445 | 213.9744 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 14 17:56 | 2025 Oct 07 11:40:48 | 82.5586 | 0.00010 | 6.6445 | 213.9744 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 12 17:56 | 2025 Oct 07 11:40:48 | 82.5586 | 0.00010 | 6.6445 | 213.9744 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 11 17:57 | 2025 Oct 07 11:40:48 | 82.5586 | 0.00010 | 6.6445 | 213.9744 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 09 17:56 | 2025 Oct 07 11:40:48 | 82.5586 | 0.00010 | 6.6445 | 213.9744 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 08 17:56 | 2025 Oct 07 11:40:48 | 82.5586 | 0.00010 | 6.6445 | 213.9744 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 07 17:56 | 2025 Oct 07 11:40:48 | 82.5586 | 0.00010 | 6.6445 | 213.9744 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 05 17:56 | 2025 Sep 26 06:41:20 | 82.5591 | 0.00008 | 7.1237 | 267.4866 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 04 17:57 | 2025 Sep 26 06:41:20 | 82.5591 | 0.00008 | 7.1237 | 267.4866 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 03 17:57 | 2025 Sep 26 06:41:20 | 82.5591 | 0.00008 | 7.1237 | 267.4866 | 310.0577 | 12.63657 | 7.743 |
| 2025 Oct 02 17:56 | 2025 Sep 26 06:41:20 | 82.5591 | 0.00008 | 7.1237 | 267.4866 | 310.0577 | 12.63657 | 7.743 |
| 2025 Sep 30 17:56 | 2025 Sep 26 06:41:20 | 82.5591 | 0.00008 | 7.1237 | 267.4866 | 310.0577 | 12.63657 | 7.743 |