Orbital elements of COSMOS 877
| Launched | 6 December 1976 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 9594 |
| 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 Dec 17 18:58 | 2025 Dec 12 06:06:05 | 74.0276 | 0.00057 | 10.6012 | 138.1371 | 47.7414 | 12.51337 | – |
| 2025 Dec 16 18:57 | 2025 Dec 12 06:06:05 | 74.0276 | 0.00057 | 10.6012 | 138.1371 | 47.7414 | 12.51337 | – |
| 2025 Dec 15 18:58 | 2025 Dec 12 06:06:05 | 74.0276 | 0.00057 | 10.6012 | 138.1371 | 47.7414 | 12.51337 | – |
| 2025 Dec 14 18:56 | 2025 Dec 12 06:06:05 | 74.0276 | 0.00057 | 10.6012 | 138.1371 | 47.7414 | 12.51337 | – |
| 2025 Dec 13 18:56 | 2025 Dec 12 06:06:05 | 74.0276 | 0.00057 | 10.6012 | 138.1371 | 47.7414 | 12.51337 | – |
| 2025 Dec 12 18:57 | 2025 Dec 12 06:06:05 | 74.0276 | 0.00057 | 10.6012 | 138.1371 | 47.7414 | 12.51337 | – |
| 2025 Dec 11 18:56 | 2025 Dec 07 07:04:51 | 74.0278 | 0.00058 | 11.0416 | 146.1687 | 47.7414 | 12.51337 | – |
| 2025 Dec 10 18:56 | 2025 Dec 07 07:04:51 | 74.0278 | 0.00058 | 11.0416 | 146.1687 | 47.7414 | 12.51337 | – |
| 2025 Dec 09 18:56 | 2025 Dec 07 07:04:51 | 74.0278 | 0.00058 | 11.0416 | 146.1687 | 47.7414 | 12.51337 | – |
| 2025 Dec 08 18:56 | 2025 Dec 07 07:04:51 | 74.0278 | 0.00058 | 11.0416 | 146.1687 | 47.7414 | 12.51337 | – |
| 2025 Dec 07 18:56 | 2025 Dec 07 07:04:51 | 74.0278 | 0.00058 | 11.0416 | 146.1687 | 47.7414 | 12.51337 | – |
| 2025 Dec 06 18:56 | 2025 Dec 02 05:55:51 | 74.0279 | 0.00058 | 11.4899 | 154.2566 | 47.7414 | 12.51337 | – |
| 2025 Dec 05 18:57 | 2025 Dec 02 05:55:51 | 74.0279 | 0.00058 | 11.4899 | 154.2566 | 47.7414 | 12.51337 | – |
| 2025 Dec 04 18:57 | 2025 Dec 02 05:55:51 | 74.0279 | 0.00058 | 11.4899 | 154.2566 | 47.7414 | 12.51337 | – |
| 2025 Dec 03 18:56 | 2025 Dec 02 05:55:51 | 74.0279 | 0.00058 | 11.4899 | 154.2566 | 47.7414 | 12.51337 | – |
| 2025 Dec 02 18:56 | 2025 Dec 02 05:55:51 | 74.0279 | 0.00058 | 11.4899 | 154.2566 | 47.7414 | 12.51337 | – |
| 2025 Nov 30 18:57 | 2025 Nov 25 09:12:31 | 74.0285 | 0.00060 | 12.0994 | 165.0878 | 47.7414 | 12.51337 | – |
| 2025 Nov 29 18:56 | 2025 Nov 25 09:12:31 | 74.0285 | 0.00060 | 12.0994 | 165.0878 | 47.7414 | 12.51337 | – |
| 2025 Nov 28 18:57 | 2025 Nov 25 09:12:31 | 74.0285 | 0.00060 | 12.0994 | 165.0878 | 47.7414 | 12.51337 | – |
| 2025 Nov 27 18:57 | 2025 Nov 25 09:12:31 | 74.0285 | 0.00060 | 12.0994 | 165.0878 | 47.7414 | 12.51337 | – |
| 2025 Nov 26 18:57 | 2025 Nov 25 09:12:31 | 74.0285 | 0.00060 | 12.0994 | 165.0878 | 47.7414 | 12.51337 | – |
| 2025 Nov 25 18:57 | 2025 Nov 25 09:12:31 | 74.0285 | 0.00060 | 12.0994 | 165.0878 | 47.7414 | 12.51337 | – |
| 2025 Nov 24 18:56 | 2025 Nov 20 02:16:29 | 74.0289 | 0.00061 | 12.5690 | 173.3298 | 47.7414 | 12.51337 | – |
| 2025 Nov 23 18:57 | 2025 Nov 20 02:16:29 | 74.0289 | 0.00061 | 12.5690 | 173.3298 | 47.7414 | 12.51337 | – |
| 2025 Nov 21 18:57 | 2025 Nov 20 02:16:29 | 74.0289 | 0.00061 | 12.5690 | 173.3298 | 47.7414 | 12.51337 | – |
| 2025 Nov 20 18:56 | 2025 Nov 20 02:16:29 | 74.0289 | 0.00061 | 12.5690 | 173.3298 | 47.7414 | 12.51337 | – |