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 |
| 2025 May 09 17:57 | 2025 May 09 06:32:58 | 82.5660 | 0.00016 | 13.1042 | 172.5708 | 251.9018 | 12.63650 | 7.743 |
| 2025 May 08 17:56 | 2025 May 03 14:01:24 | 82.5668 | 0.00014 | 13.3471 | 184.5587 | 251.9018 | 12.63650 | 7.743 |
| 2025 May 07 17:56 | 2025 May 03 14:01:24 | 82.5668 | 0.00014 | 13.3471 | 184.5587 | 251.9018 | 12.63650 | 7.743 |
| 2025 May 06 17:57 | 2025 May 03 14:01:24 | 82.5668 | 0.00014 | 13.3471 | 184.5587 | 251.9018 | 12.63650 | 7.743 |
| 2025 May 05 17:56 | 2025 May 03 14:01:24 | 82.5668 | 0.00014 | 13.3471 | 184.5587 | 251.9018 | 12.63650 | 7.743 |
| 2025 May 04 17:57 | 2025 May 03 14:01:24 | 82.5668 | 0.00014 | 13.3471 | 184.5587 | 251.9018 | 12.63650 | 7.743 |
| 2025 May 03 17:57 | 2025 May 03 14:01:24 | 82.5668 | 0.00014 | 13.3471 | 184.5587 | 251.9018 | 12.63650 | 7.743 |
| 2025 May 01 17:56 | 2025 Apr 22 13:57:03 | 82.5669 | 0.00009 | 13.8169 | 212.2546 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 30 17:56 | 2025 Apr 22 13:57:03 | 82.5669 | 0.00009 | 13.8169 | 212.2546 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 29 17:57 | 2025 Apr 22 13:57:03 | 82.5669 | 0.00009 | 13.8169 | 212.2546 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 27 17:56 | 2025 Apr 22 13:57:03 | 82.5669 | 0.00009 | 13.8169 | 212.2546 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 26 17:57 | 2025 Apr 22 13:57:03 | 82.5669 | 0.00009 | 13.8169 | 212.2546 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 25 17:56 | 2025 Apr 22 13:57:03 | 82.5669 | 0.00009 | 13.8169 | 212.2546 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 24 17:56 | 2025 Apr 22 13:57:03 | 82.5669 | 0.00009 | 13.8169 | 212.2546 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 23 17:57 | 2025 Apr 22 13:57:03 | 82.5669 | 0.00009 | 13.8169 | 212.2546 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 22 17:56 | 2025 Apr 22 13:57:03 | 82.5669 | 0.00009 | 13.8169 | 212.2546 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 21 17:57 | 2025 Apr 16 09:23:57 | 82.5665 | 0.00007 | 14.0812 | 239.0946 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 20 17:56 | 2025 Apr 16 09:23:57 | 82.5665 | 0.00007 | 14.0812 | 239.0946 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 19 17:56 | 2025 Apr 16 09:23:57 | 82.5665 | 0.00007 | 14.0812 | 239.0946 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 18 17:57 | 2025 Apr 16 09:23:57 | 82.5665 | 0.00007 | 14.0812 | 239.0946 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 17 17:56 | 2025 Apr 16 09:23:57 | 82.5665 | 0.00007 | 14.0812 | 239.0946 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 16 17:57 | 2025 Apr 16 09:23:57 | 82.5665 | 0.00007 | 14.0812 | 239.0946 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 15 17:56 | 2025 Apr 10 20:40:36 | 82.5660 | 0.00005 | 14.3174 | 273.7737 | 251.9018 | 12.63650 | 7.743 |
| 2025 Apr 14 17:56 | 2025 Apr 10 20:40:36 | 82.5660 | 0.00005 | 14.3174 | 273.7737 | 251.9018 | 12.63650 | 7.743 |