Orbital elements of COSMOS 677
| Launched | 18 September 1974 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 7435 |
| 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 |
| 2026 Jun 13 17:56 | 2026 Jun 12 04:34:59 | 74.0359 | 0.00443 | 21.3743 | 55.1874 | 116.8551 | 12.58030 | – |
| 2026 Jun 12 17:56 | 2026 Jun 12 04:34:59 | 74.0359 | 0.00443 | 21.3743 | 55.1874 | 116.8551 | 12.58030 | – |
| 2026 Jun 11 17:57 | 2026 Jun 07 06:16:24 | 74.0357 | 0.00443 | 21.8175 | 62.7942 | 116.8551 | 12.58030 | – |
| 2026 Jun 10 17:56 | 2026 Jun 07 06:16:24 | 74.0357 | 0.00443 | 21.8175 | 62.7942 | 116.8551 | 12.58030 | – |
| 2026 Jun 09 17:57 | 2026 Jun 07 06:16:24 | 74.0357 | 0.00443 | 21.8175 | 62.7942 | 116.8551 | 12.58030 | – |
| 2026 Jun 08 17:56 | 2026 Jun 07 06:16:24 | 74.0357 | 0.00443 | 21.8175 | 62.7942 | 116.8551 | 12.58030 | – |
| 2026 Jun 07 17:56 | 2026 Jun 07 06:16:24 | 74.0357 | 0.00443 | 21.8175 | 62.7942 | 116.8551 | 12.58030 | – |
| 2026 Jun 06 17:56 | 2026 May 31 06:00:14 | 74.0356 | 0.00443 | 22.4479 | 73.6211 | 116.8551 | 12.58030 | – |
| 2026 Jun 05 17:56 | 2026 May 31 06:00:14 | 74.0356 | 0.00443 | 22.4479 | 73.6211 | 116.8551 | 12.58030 | – |
| 2026 Jun 04 17:57 | 2026 May 31 06:00:14 | 74.0356 | 0.00443 | 22.4479 | 73.6211 | 116.8551 | 12.58030 | – |
| 2026 Jun 02 17:56 | 2026 May 31 06:00:14 | 74.0356 | 0.00443 | 22.4479 | 73.6211 | 116.8551 | 12.58030 | – |
| 2026 Jun 01 17:57 | 2026 May 31 06:00:14 | 74.0356 | 0.00443 | 22.4479 | 73.6211 | 116.8551 | 12.58030 | – |
| 2026 May 31 17:58 | 2026 May 31 06:00:14 | 74.0356 | 0.00443 | 22.4479 | 73.6211 | 116.8551 | 12.58030 | – |
| 2026 May 30 17:57 | 2026 May 26 05:49:30 | 74.0359 | 0.00443 | 22.8981 | 81.3453 | 116.8551 | 12.58030 | – |
| 2026 May 29 17:57 | 2026 May 26 05:49:30 | 74.0359 | 0.00443 | 22.8981 | 81.3453 | 116.8551 | 12.58030 | – |
| 2026 May 28 17:56 | 2026 May 26 05:49:30 | 74.0359 | 0.00443 | 22.8981 | 81.3453 | 116.8551 | 12.58030 | – |
| 2026 May 27 17:57 | 2026 May 26 05:49:30 | 74.0359 | 0.00443 | 22.8981 | 81.3453 | 116.8551 | 12.58030 | – |
| 2026 May 26 17:57 | 2026 May 26 05:49:30 | 74.0359 | 0.00443 | 22.8981 | 81.3453 | 116.8551 | 12.58030 | – |
| 2026 May 25 17:57 | 2026 May 21 07:27:30 | 74.0363 | 0.00443 | 23.3415 | 88.9640 | 116.8551 | 12.58030 | – |
| 2026 May 24 17:57 | 2026 May 21 07:27:30 | 74.0363 | 0.00443 | 23.3415 | 88.9640 | 116.8551 | 12.58030 | – |
| 2026 May 23 17:58 | 2026 May 21 07:27:30 | 74.0363 | 0.00443 | 23.3415 | 88.9640 | 116.8551 | 12.58030 | – |
| 2026 May 22 17:57 | 2026 May 21 07:27:30 | 74.0363 | 0.00443 | 23.3415 | 88.9640 | 116.8551 | 12.58030 | – |
| 2026 May 21 17:57 | 2026 May 21 07:27:30 | 74.0363 | 0.00443 | 23.3415 | 88.9640 | 116.8551 | 12.58030 | – |
| 2026 May 20 17:57 | 2026 May 16 14:25:31 | 74.0368 | 0.00443 | 23.7649 | 96.2402 | 116.8551 | 12.58030 | – |
| 2026 May 19 17:58 | 2026 May 16 14:25:31 | 74.0368 | 0.00443 | 23.7649 | 96.2402 | 116.8551 | 12.58030 | – |
| 2026 May 18 17:57 | 2026 May 16 14:25:31 | 74.0368 | 0.00443 | 23.7649 | 96.2402 | 116.8551 | 12.58030 | – |
| 2026 May 17 17:57 | 2026 May 16 14:25:31 | 74.0368 | 0.00443 | 23.7649 | 96.2402 | 116.8551 | 12.58030 | – |