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 16 18:57 | 2025 Dec 12 06:01:10 | 82.6112 | 0.00155 | 6.0558 | 350.2622 | 9.8168 | 12.64929 | – |
| 2025 Dec 15 18:58 | 2025 Dec 12 06:01:10 | 82.6112 | 0.00155 | 6.0558 | 350.2622 | 9.8168 | 12.64929 | – |
| 2025 Dec 14 18:56 | 2025 Dec 12 06:01:10 | 82.6112 | 0.00155 | 6.0558 | 350.2622 | 9.8168 | 12.64929 | – |
| 2025 Dec 13 18:56 | 2025 Dec 12 06:01:10 | 82.6112 | 0.00155 | 6.0558 | 350.2622 | 9.8168 | 12.64929 | – |
| 2025 Dec 12 18:57 | 2025 Dec 12 06:01:10 | 82.6112 | 0.00155 | 6.0558 | 350.2622 | 9.8168 | 12.64929 | – |
| 2025 Dec 11 18:56 | 2025 Dec 07 06:25:38 | 82.6110 | 0.00157 | 6.2678 | 1.5970 | 9.8168 | 12.64929 | – |
| 2025 Dec 10 18:56 | 2025 Dec 07 06:25:38 | 82.6110 | 0.00157 | 6.2678 | 1.5970 | 9.8168 | 12.64929 | – |
| 2025 Dec 09 18:56 | 2025 Dec 07 06:25:38 | 82.6110 | 0.00157 | 6.2678 | 1.5970 | 9.8168 | 12.64929 | – |
| 2025 Dec 08 18:56 | 2025 Dec 07 06:25:38 | 82.6110 | 0.00157 | 6.2678 | 1.5970 | 9.8168 | 12.64929 | – |
| 2025 Dec 07 18:56 | 2025 Dec 07 06:25:38 | 82.6110 | 0.00157 | 6.2678 | 1.5970 | 9.8168 | 12.64929 | – |
| 2025 Dec 06 18:56 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 9.8168 | 12.64929 | – |
| 2025 Dec 05 18:57 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 9.8168 | 12.64929 | – |
| 2025 Dec 04 18:57 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 9.8168 | 12.64929 | – |
| 2025 Dec 03 18:56 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 9.8168 | 12.64929 | – |
| 2025 Dec 02 18:56 | 2025 Dec 02 10:37:54 | 82.6103 | 0.00159 | 6.4731 | 12.7404 | 9.8168 | 12.64929 | – |
| 2025 Nov 30 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 9.8168 | 12.64929 | – |
| 2025 Nov 29 18:56 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 9.8168 | 12.64929 | – |
| 2025 Nov 28 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 9.8168 | 12.64929 | – |
| 2025 Nov 27 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 9.8168 | 12.64929 | – |
| 2025 Nov 26 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 9.8168 | 12.64929 | – |
| 2025 Nov 25 18:57 | 2025 Nov 25 09:41:03 | 82.6094 | 0.00162 | 6.7727 | 28.8319 | 9.8168 | 12.64929 | – |
| 2025 Nov 24 18:56 | 2025 Nov 20 02:29:55 | 82.6090 | 0.00164 | 6.9983 | 40.3814 | 9.8168 | 12.64929 | – |
| 2025 Nov 23 18:57 | 2025 Nov 20 02:29:55 | 82.6090 | 0.00164 | 6.9983 | 40.3814 | 9.8168 | 12.64929 | – |
| 2025 Nov 21 18:57 | 2025 Nov 20 02:29:55 | 82.6090 | 0.00164 | 6.9983 | 40.3814 | 9.8168 | 12.64929 | – |
| 2025 Nov 20 18:56 | 2025 Nov 20 02:29:55 | 82.6090 | 0.00164 | 6.9983 | 40.3814 | 9.8168 | 12.64929 | – |