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 Sep 15 17:56 | 2025 Sep 15 04:39:16 | 82.9196 | 0.00497 | 3.9231 | 202.6718 | 157.2242 | 13.73901 | 6.743 |
| 2025 Sep 12 17:57 | 2025 Sep 03 06:00:30 | 82.9183 | 0.00491 | 4.5139 | 236.4786 | 157.2242 | 13.73901 | 6.743 |
| 2025 Sep 11 17:57 | 2025 Sep 03 06:00:30 | 82.9183 | 0.00491 | 4.5139 | 236.4786 | 157.2242 | 13.73901 | 6.743 |
| 2025 Sep 10 17:56 | 2025 Sep 03 06:00:30 | 82.9183 | 0.00491 | 4.5139 | 236.4786 | 157.2242 | 13.73901 | 6.743 |
| 2025 Sep 08 17:57 | 2025 Sep 03 06:00:30 | 82.9183 | 0.00491 | 4.5139 | 236.4786 | 157.2242 | 13.73901 | 6.743 |
| 2025 Sep 07 17:56 | 2025 Sep 03 06:00:30 | 82.9183 | 0.00491 | 4.5139 | 236.4786 | 157.2242 | 13.73901 | 6.743 |
| 2025 Sep 06 20:41 | 2025 Sep 03 06:00:30 | 82.9183 | 0.00491 | 4.5139 | 236.4786 | 157.2242 | 13.73901 | 6.743 |
| 2025 Sep 03 17:57 | 2025 Sep 03 06:00:30 | 82.9183 | 0.00491 | 4.5139 | 236.4786 | 157.2242 | 13.73901 | 6.743 |
| 2025 Sep 02 17:56 | 2025 Aug 27 21:56:46 | 82.9182 | 0.00489 | 4.8274 | 254.5651 | 157.2242 | 13.73901 | 6.743 |
| 2025 Sep 01 17:56 | 2025 Aug 27 21:56:46 | 82.9182 | 0.00489 | 4.8274 | 254.5651 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 31 17:56 | 2025 Aug 27 21:56:46 | 82.9182 | 0.00489 | 4.8274 | 254.5651 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 30 17:56 | 2025 Aug 27 21:56:46 | 82.9182 | 0.00489 | 4.8274 | 254.5651 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 29 17:56 | 2025 Aug 27 21:56:46 | 82.9182 | 0.00489 | 4.8274 | 254.5651 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 28 17:57 | 2025 Aug 27 21:56:46 | 82.9182 | 0.00489 | 4.8274 | 254.5651 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 27 17:56 | 2025 Aug 23 06:05:04 | 82.9181 | 0.00489 | 5.0580 | 267.9020 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 26 17:56 | 2025 Aug 23 06:05:04 | 82.9181 | 0.00489 | 5.0580 | 267.9020 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 25 17:56 | 2025 Aug 23 06:05:04 | 82.9181 | 0.00489 | 5.0580 | 267.9020 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 24 17:56 | 2025 Aug 23 06:05:04 | 82.9181 | 0.00489 | 5.0580 | 267.9020 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 23 17:56 | 2025 Aug 23 06:05:04 | 82.9181 | 0.00489 | 5.0580 | 267.9020 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 22 17:56 | 2025 Aug 17 22:29:32 | 82.9185 | 0.00489 | 5.3210 | 283.1235 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 20 17:56 | 2025 Aug 17 22:29:32 | 82.9185 | 0.00489 | 5.3210 | 283.1235 | 157.2242 | 13.73901 | 6.743 |
| 2025 Aug 19 17:56 | 2025 Aug 17 22:29:32 | 82.9185 | 0.00489 | 5.3210 | 283.1235 | 157.2242 | 13.73901 | 6.743 |