Orbital elements of COSMOS 1891
| Launched | 13 October 1987 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 18402 |
| 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 Dec 16 18:57 | 2025 Dec 12 02:16:45 | 82.9222 | 0.00493 | 23.5778 | 320.6388 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 15 18:58 | 2025 Dec 12 02:16:45 | 82.9222 | 0.00493 | 23.5778 | 320.6388 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 14 18:56 | 2025 Dec 12 02:16:45 | 82.9222 | 0.00493 | 23.5778 | 320.6388 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 13 18:56 | 2025 Dec 12 02:16:45 | 82.9222 | 0.00493 | 23.5778 | 320.6388 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 12 18:57 | 2025 Dec 12 02:16:45 | 82.9222 | 0.00493 | 23.5778 | 320.6388 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 11 18:56 | 2025 Dec 07 06:55:25 | 82.9224 | 0.00495 | 23.8155 | 334.1975 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 10 18:56 | 2025 Dec 07 06:55:25 | 82.9224 | 0.00495 | 23.8155 | 334.1975 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 09 18:56 | 2025 Dec 07 06:55:25 | 82.9224 | 0.00495 | 23.8155 | 334.1975 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 08 18:56 | 2025 Dec 07 06:55:25 | 82.9224 | 0.00495 | 23.8155 | 334.1975 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 07 18:56 | 2025 Dec 07 06:55:25 | 82.9224 | 0.00495 | 23.8155 | 334.1975 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 06 18:56 | 2025 Dec 02 11:34:06 | 82.9228 | 0.00498 | 0.0532 | 347.7140 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 05 18:57 | 2025 Dec 02 11:34:06 | 82.9228 | 0.00498 | 0.0532 | 347.7140 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 04 18:57 | 2025 Dec 02 11:34:06 | 82.9228 | 0.00498 | 0.0532 | 347.7140 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 03 18:56 | 2025 Dec 02 11:34:06 | 82.9228 | 0.00498 | 0.0532 | 347.7140 | 39.1191 | 13.73915 | 6.743 |
| 2025 Dec 02 18:56 | 2025 Dec 02 11:34:06 | 82.9228 | 0.00498 | 0.0532 | 347.7140 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 30 18:57 | 2025 Nov 25 11:46:43 | 82.9235 | 0.00502 | 0.3989 | 7.2489 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 29 18:56 | 2025 Nov 25 11:46:43 | 82.9235 | 0.00502 | 0.3989 | 7.2489 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 28 18:57 | 2025 Nov 25 11:46:43 | 82.9235 | 0.00502 | 0.3989 | 7.2489 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 27 18:57 | 2025 Nov 25 11:46:43 | 82.9235 | 0.00502 | 0.3989 | 7.2489 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 26 18:57 | 2025 Nov 25 11:46:43 | 82.9235 | 0.00502 | 0.3989 | 7.2489 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 25 18:57 | 2025 Nov 25 11:46:43 | 82.9235 | 0.00502 | 0.3989 | 7.2489 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 24 18:56 | 2025 Nov 20 05:56:10 | 82.9242 | 0.00506 | 0.6581 | 21.7384 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 23 18:57 | 2025 Nov 20 05:56:10 | 82.9242 | 0.00506 | 0.6581 | 21.7384 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 21 18:57 | 2025 Nov 20 05:56:10 | 82.9242 | 0.00506 | 0.6581 | 21.7384 | 39.1191 | 13.73915 | 6.743 |
| 2025 Nov 20 18:56 | 2025 Nov 20 05:56:10 | 82.9242 | 0.00506 | 0.6581 | 21.7384 | 39.1191 | 13.73915 | 6.743 |