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 Mar 12 18:57 | 2026 Mar 10 12:12:08 | 74.0318 | 0.00450 | 5.7965 | 199.5469 | 276.2892 | 12.58028 | – |
| 2026 Mar 11 18:56 | 2026 Mar 10 12:12:08 | 74.0318 | 0.00450 | 5.7965 | 199.5469 | 276.2892 | 12.58028 | – |
| 2026 Mar 10 18:56 | 2026 Mar 10 12:12:08 | 74.0318 | 0.00450 | 5.7965 | 199.5469 | 276.2892 | 12.58028 | – |
| 2026 Mar 09 18:56 | 2026 Mar 04 12:50:37 | 74.0321 | 0.00451 | 6.3336 | 208.5977 | 276.2892 | 12.58028 | – |
| 2026 Mar 08 18:57 | 2026 Mar 04 12:50:37 | 74.0321 | 0.00451 | 6.3336 | 208.5977 | 276.2892 | 12.58028 | – |
| 2026 Mar 07 18:57 | 2026 Mar 04 12:50:37 | 74.0321 | 0.00451 | 6.3336 | 208.5977 | 276.2892 | 12.58028 | – |
| 2026 Mar 06 18:56 | 2026 Mar 04 12:50:37 | 74.0321 | 0.00451 | 6.3336 | 208.5977 | 276.2892 | 12.58028 | – |
| 2026 Mar 05 18:56 | 2026 Mar 04 12:50:37 | 74.0321 | 0.00451 | 6.3336 | 208.5977 | 276.2892 | 12.58028 | – |
| 2026 Mar 04 18:57 | 2026 Mar 04 12:50:37 | 74.0321 | 0.00451 | 6.3336 | 208.5977 | 276.2892 | 12.58028 | – |
| 2026 Mar 03 18:56 | 2026 Feb 26 14:13:30 | 74.0327 | 0.00452 | 6.8679 | 217.5334 | 276.2892 | 12.58028 | – |
| 2026 Mar 02 18:57 | 2026 Feb 26 14:13:30 | 74.0327 | 0.00452 | 6.8679 | 217.5334 | 276.2892 | 12.58028 | – |
| 2026 Mar 01 18:57 | 2026 Feb 26 14:13:30 | 74.0327 | 0.00452 | 6.8679 | 217.5334 | 276.2892 | 12.58028 | – |
| 2026 Feb 28 18:56 | 2026 Feb 26 14:13:30 | 74.0327 | 0.00452 | 6.8679 | 217.5334 | 276.2892 | 12.58028 | – |
| 2026 Feb 27 19:05 | 2026 Feb 26 14:13:30 | 74.0327 | 0.00452 | 6.8679 | 217.5334 | 276.2892 | 12.58028 | – |
| 2026 Feb 26 20:45 | 2026 Feb 26 14:13:30 | 74.0327 | 0.00452 | 6.8679 | 217.5334 | 276.2892 | 12.58028 | – |