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 |
| 2026 Mar 28 18:57 | 2026 Mar 26 12:13:56 | 82.5691 | 0.00011 | 23.3791 | 173.7977 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 27 18:57 | 2026 Mar 26 12:13:56 | 82.5691 | 0.00011 | 23.3791 | 173.7977 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 26 18:57 | 2026 Mar 26 12:13:56 | 82.5691 | 0.00011 | 23.3791 | 173.7977 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 25 18:56 | 2026 Mar 20 11:49:12 | 82.5697 | 0.00008 | 23.6361 | 189.8107 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 24 18:56 | 2026 Mar 20 11:49:12 | 82.5697 | 0.00008 | 23.6361 | 189.8107 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 23 18:56 | 2026 Mar 20 11:49:12 | 82.5697 | 0.00008 | 23.6361 | 189.8107 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 22 18:56 | 2026 Mar 20 11:49:12 | 82.5697 | 0.00008 | 23.6361 | 189.8107 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 21 19:05 | 2026 Mar 20 11:49:12 | 82.5697 | 0.00008 | 23.6361 | 189.8107 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 20 18:57 | 2026 Mar 20 11:49:12 | 82.5697 | 0.00008 | 23.6361 | 189.8107 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 19 18:56 | 2026 Mar 15 14:00:52 | 82.5698 | 0.00006 | 23.8457 | 210.7412 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 18 18:56 | 2026 Mar 15 14:00:52 | 82.5698 | 0.00006 | 23.8457 | 210.7412 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 17 18:56 | 2026 Mar 15 14:00:52 | 82.5698 | 0.00006 | 23.8457 | 210.7412 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 16 18:57 | 2026 Mar 15 14:00:52 | 82.5698 | 0.00006 | 23.8457 | 210.7412 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 15 18:56 | 2026 Mar 15 14:00:52 | 82.5698 | 0.00006 | 23.8457 | 210.7412 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 14 18:56 | 2026 Mar 10 08:21:05 | 82.5695 | 0.00005 | 0.0693 | 241.1071 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 13 18:57 | 2026 Mar 10 08:21:05 | 82.5695 | 0.00005 | 0.0693 | 241.1071 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 12 18:57 | 2026 Mar 10 08:21:05 | 82.5695 | 0.00005 | 0.0693 | 241.1071 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 11 18:56 | 2026 Mar 10 08:21:05 | 82.5695 | 0.00005 | 0.0693 | 241.1071 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 10 18:56 | 2026 Mar 10 08:21:05 | 82.5695 | 0.00005 | 0.0693 | 241.1071 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 09 18:56 | 2026 Mar 04 07:53:00 | 82.5689 | 0.00005 | 0.3263 | 280.8869 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 08 18:57 | 2026 Mar 04 07:53:00 | 82.5689 | 0.00005 | 0.3263 | 280.8869 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 07 18:57 | 2026 Mar 04 07:53:00 | 82.5689 | 0.00005 | 0.3263 | 280.8869 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 06 18:56 | 2026 Mar 04 07:53:00 | 82.5689 | 0.00005 | 0.3263 | 280.8869 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 05 18:56 | 2026 Mar 04 07:53:00 | 82.5689 | 0.00005 | 0.3263 | 280.8869 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 04 18:57 | 2026 Mar 04 07:53:00 | 82.5689 | 0.00005 | 0.3263 | 280.8869 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 03 18:56 | 2026 Feb 26 09:24:46 | 82.5679 | 0.00007 | 0.5799 | 313.9046 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 02 18:57 | 2026 Feb 26 09:24:46 | 82.5679 | 0.00007 | 0.5799 | 313.9046 | 359.6885 | 12.63663 | 7.743 |
| 2026 Mar 01 18:57 | 2026 Feb 26 09:24:46 | 82.5679 | 0.00007 | 0.5799 | 313.9046 | 359.6885 | 12.63663 | 7.743 |