Orbital elements of COSMOS 1998
| Launched | 9 February 1989 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 19789 |
| 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 06 18:56 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 347.4087 | 12.64928 | – |
| 2025 Dec 05 18:57 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 347.4087 | 12.64928 | – |
| 2025 Dec 04 18:57 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 347.4087 | 12.64928 | – |
| 2025 Dec 03 18:56 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 347.4087 | 12.64928 | – |
| 2025 Dec 02 18:56 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 347.4087 | 12.64928 | – |
| 2025 Nov 30 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 347.4087 | 12.64928 | – |
| 2025 Nov 29 18:56 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 347.4087 | 12.64928 | – |
| 2025 Nov 28 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 347.4087 | 12.64928 | – |
| 2025 Nov 27 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 347.4087 | 12.64928 | – |
| 2025 Nov 26 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 347.4087 | 12.64928 | – |
| 2025 Nov 25 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 347.4087 | 12.64928 | – |
| 2025 Nov 24 18:56 | 2025 Nov 20 02:29:55 | 82.6090 | 0.00164 | 6.9983 | 40.3814 | 347.4087 | 12.64928 | – |
| 2025 Nov 23 18:57 | 2025 Nov 20 02:29:55 | 82.6090 | 0.00164 | 6.9983 | 40.3814 | 347.4087 | 12.64928 | – |
| 2025 Nov 21 18:57 | 2025 Nov 20 02:29:55 | 82.6090 | 0.00164 | 6.9983 | 40.3814 | 347.4087 | 12.64928 | – |
| 2025 Nov 20 18:56 | 2025 Nov 20 02:29:55 | 82.6090 | 0.00164 | 6.9983 | 40.3814 | 347.4087 | 12.64928 | – |
| 2025 Nov 18 18:57 | 2025 Nov 08 11:27:00 | 82.6074 | 0.00167 | 7.4932 | 65.7104 | 347.4087 | 12.64928 | – |
| 2025 Nov 16 18:58 | 2025 Nov 08 11:27:00 | 82.6074 | 0.00167 | 7.4932 | 65.7104 | 347.4087 | 12.64928 | – |
| 2025 Nov 15 18:57 | 2025 Nov 08 11:27:00 | 82.6074 | 0.00167 | 7.4932 | 65.7104 | 347.4087 | 12.64928 | – |
| 2025 Nov 13 18:56 | 2025 Nov 08 11:27:00 | 82.6074 | 0.00167 | 7.4932 | 65.7104 | 347.4087 | 12.64928 | – |
| 2025 Nov 12 18:57 | 2025 Nov 08 11:27:00 | 82.6074 | 0.00167 | 7.4932 | 65.7104 | 347.4087 | 12.64928 | – |
| 2025 Nov 11 18:55 | 2025 Nov 08 11:27:00 | 82.6074 | 0.00167 | 7.4932 | 65.7104 | 347.4087 | 12.64928 | – |
| 2025 Nov 10 18:57 | 2025 Nov 08 11:27:00 | 82.6074 | 0.00167 | 7.4932 | 65.7104 | 347.4087 | 12.64928 | – |