Orbital elements of COSMOS 977
| Launched | 9 January 1978 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 10584 |
| 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 11 17:56 | 2025 May 09 06:47:52 | 74.0289 | 0.00409 | 10.9704 | 357.6238 | 77.0261 | 12.57982 | – |
| 2025 May 10 17:56 | 2025 May 09 06:47:52 | 74.0289 | 0.00409 | 10.9704 | 357.6238 | 77.0261 | 12.57982 | – |
| 2025 May 09 17:57 | 2025 May 09 06:47:52 | 74.0289 | 0.00409 | 10.9704 | 357.6238 | 77.0261 | 12.57982 | – |
| 2025 May 08 17:56 | 2025 May 03 13:50:00 | 74.0300 | 0.00408 | 11.4835 | 6.3694 | 77.0261 | 12.57982 | – |
| 2025 May 07 17:56 | 2025 May 03 13:50:00 | 74.0300 | 0.00408 | 11.4835 | 6.3694 | 77.0261 | 12.57982 | – |
| 2025 May 06 17:57 | 2025 May 03 13:50:00 | 74.0300 | 0.00408 | 11.4835 | 6.3694 | 77.0261 | 12.57982 | – |
| 2025 May 05 17:56 | 2025 May 03 13:50:00 | 74.0300 | 0.00408 | 11.4835 | 6.3694 | 77.0261 | 12.57982 | – |
| 2025 May 04 17:57 | 2025 May 03 13:50:00 | 74.0300 | 0.00408 | 11.4835 | 6.3694 | 77.0261 | 12.57982 | – |
| 2025 May 03 17:57 | 2025 May 03 13:50:00 | 74.0300 | 0.00408 | 11.4835 | 6.3694 | 77.0261 | 12.57982 | – |
| 2025 May 01 17:56 | 2025 Apr 22 08:17:12 | 74.0316 | 0.00407 | 12.4932 | 23.6567 | 77.0261 | 12.57982 | – |
| 2025 Apr 30 17:56 | 2025 Apr 22 08:17:12 | 74.0316 | 0.00407 | 12.4932 | 23.6567 | 77.0261 | 12.57982 | – |
| 2025 Apr 29 17:57 | 2025 Apr 22 08:17:12 | 74.0316 | 0.00407 | 12.4932 | 23.6567 | 77.0261 | 12.57982 | – |
| 2025 Apr 27 17:56 | 2025 Apr 22 08:17:12 | 74.0316 | 0.00407 | 12.4932 | 23.6567 | 77.0261 | 12.57982 | – |
| 2025 Apr 26 17:57 | 2025 Apr 22 08:17:12 | 74.0316 | 0.00407 | 12.4932 | 23.6567 | 77.0261 | 12.57982 | – |
| 2025 Apr 25 17:56 | 2025 Apr 22 08:17:12 | 74.0316 | 0.00407 | 12.4932 | 23.6567 | 77.0261 | 12.57982 | – |
| 2025 Apr 24 17:56 | 2025 Apr 22 08:17:12 | 74.0316 | 0.00407 | 12.4932 | 23.6567 | 77.0261 | 12.57982 | – |
| 2025 Apr 23 17:57 | 2025 Apr 22 08:17:12 | 74.0316 | 0.00407 | 12.4932 | 23.6567 | 77.0261 | 12.57982 | – |
| 2025 Apr 22 17:56 | 2025 Apr 22 08:17:12 | 74.0316 | 0.00407 | 12.4932 | 23.6567 | 77.0261 | 12.57982 | – |
| 2025 Apr 21 17:57 | 2025 Apr 15 18:07:50 | 74.0320 | 0.00406 | 13.0856 | 33.8122 | 77.0261 | 12.57982 | – |
| 2025 Apr 20 17:56 | 2025 Apr 15 18:07:50 | 74.0320 | 0.00406 | 13.0856 | 33.8122 | 77.0261 | 12.57982 | – |
| 2025 Apr 19 17:56 | 2025 Apr 15 18:07:50 | 74.0320 | 0.00406 | 13.0856 | 33.8122 | 77.0261 | 12.57982 | – |
| 2025 Apr 18 17:57 | 2025 Apr 15 18:07:50 | 74.0320 | 0.00406 | 13.0856 | 33.8122 | 77.0261 | 12.57982 | – |
| 2025 Apr 17 17:56 | 2025 Apr 15 18:07:50 | 74.0320 | 0.00406 | 13.0856 | 33.8122 | 77.0261 | 12.57982 | – |
| 2025 Apr 16 17:57 | 2025 Apr 15 18:07:50 | 74.0320 | 0.00406 | 13.0856 | 33.8122 | 77.0261 | 12.57982 | – |
| 2025 Apr 15 17:56 | 2025 Apr 10 17:51:26 | 74.0320 | 0.00405 | 13.5361 | 41.5492 | 77.0261 | 12.57982 | – |
| 2025 Apr 14 17:56 | 2025 Apr 10 17:51:26 | 74.0320 | 0.00405 | 13.5361 | 41.5492 | 77.0261 | 12.57982 | – |