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 Jan 14 18:56 | 2025 Jan 12 07:23:42 | 82.6131 | 0.00168 | 20.2658 | 30.7014 | 329.5060 | 12.64914 | – |
| 2025 Jan 13 18:56 | 2025 Jan 12 07:23:42 | 82.6131 | 0.00168 | 20.2658 | 30.7014 | 329.5060 | 12.64914 | – |
| 2025 Jan 12 18:55 | 2025 Jan 12 07:23:42 | 82.6131 | 0.00168 | 20.2658 | 30.7014 | 329.5060 | 12.64914 | – |
| 2025 Jan 11 18:54 | 2025 Jan 07 13:29:47 | 82.6133 | 0.00170 | 20.4677 | 40.9967 | 329.5060 | 12.64914 | – |
| 2025 Jan 10 19:20 | 2025 Jan 07 13:29:47 | 82.6133 | 0.00170 | 20.4677 | 40.9967 | 329.5060 | 12.64914 | – |
| 2025 Jan 09 18:54 | 2025 Jan 07 13:29:47 | 82.6133 | 0.00170 | 20.4677 | 40.9967 | 329.5060 | 12.64914 | – |
| 2025 Jan 08 18:53 | 2025 Jan 07 13:29:47 | 82.6133 | 0.00170 | 20.4677 | 40.9967 | 329.5060 | 12.64914 | – |
| 2025 Jan 07 18:54 | 2025 Jan 07 13:29:47 | 82.6133 | 0.00170 | 20.4677 | 40.9967 | 329.5060 | 12.64914 | – |
| 2025 Jan 06 18:53 | 2025 Jan 01 18:55:12 | 82.6128 | 0.00171 | 20.7134 | 53.5475 | 329.5060 | 12.64914 | – |
| 2025 Jan 05 18:53 | 2025 Jan 01 18:55:12 | 82.6128 | 0.00171 | 20.7134 | 53.5475 | 329.5060 | 12.64914 | – |
| 2025 Jan 04 18:53 | 2025 Jan 01 18:55:12 | 82.6128 | 0.00171 | 20.7134 | 53.5475 | 329.5060 | 12.64914 | – |
| 2025 Jan 03 18:53 | 2025 Jan 01 18:55:12 | 82.6128 | 0.00171 | 20.7134 | 53.5475 | 329.5060 | 12.64914 | – |
| 2025 Jan 02 18:53 | 2025 Jan 01 18:55:12 | 82.6128 | 0.00171 | 20.7134 | 53.5475 | 329.5060 | 12.64914 | – |
| 2025 Jan 01 18:53 | 2024 Dec 31 20:08:24 | 82.6128 | 0.00171 | 20.7538 | 55.5884 | 329.5060 | 12.64914 | – |
| 2024 Dec 31 18:53 | 2024 Dec 27 04:08:23 | 82.6121 | 0.00172 | 20.9524 | 65.6463 | 329.5060 | 12.64914 | – |
| 2024 Dec 30 18:53 | 2024 Dec 27 04:08:23 | 82.6121 | 0.00172 | 20.9524 | 65.6463 | 329.5060 | 12.64914 | – |
| 2024 Dec 29 20:34 | 2024 Dec 27 04:08:23 | 82.6121 | 0.00172 | 20.9524 | 65.6463 | 329.5060 | 12.64914 | – |
| 2024 Dec 28 18:53 | 2024 Dec 27 04:08:23 | 82.6121 | 0.00172 | 20.9524 | 65.6463 | 329.5060 | 12.64914 | – |
| 2024 Dec 27 18:53 | 2024 Dec 27 04:08:23 | 82.6121 | 0.00172 | 20.9524 | 65.6463 | 329.5060 | 12.64914 | – |
| 2024 Dec 26 18:53 | 2024 Dec 22 08:20:34 | 82.6117 | 0.00172 | 21.1577 | 76.0076 | 329.5060 | 12.64914 | – |
| 2024 Dec 25 18:53 | 2024 Dec 22 08:20:34 | 82.6117 | 0.00172 | 21.1577 | 76.0076 | 329.5060 | 12.64914 | – |
| 2024 Dec 24 18:53 | 2024 Dec 22 08:20:34 | 82.6117 | 0.00172 | 21.1577 | 76.0076 | 329.5060 | 12.64914 | – |
| 2024 Dec 23 19:54 | 2024 Dec 22 08:20:34 | 82.6117 | 0.00172 | 21.1577 | 76.0076 | 329.5060 | 12.64914 | – |
| 2024 Dec 22 18:53 | 2024 Dec 22 08:20:34 | 82.6117 | 0.00172 | 21.1577 | 76.0076 | 329.5060 | 12.64914 | – |
| 2024 Dec 21 18:53 | 2024 Dec 15 22:34:46 | 82.6111 | 0.00172 | 21.4304 | 89.7574 | 329.5060 | 12.64914 | – |
| 2024 Dec 20 18:53 | 2024 Dec 15 22:34:46 | 82.6111 | 0.00172 | 21.4304 | 89.7574 | 329.5060 | 12.64914 | – |
| 2024 Dec 19 18:53 | 2024 Dec 15 22:34:46 | 82.6111 | 0.00172 | 21.4304 | 89.7574 | 329.5060 | 12.64914 | – |
| 2024 Dec 18 18:53 | 2024 Dec 15 22:34:46 | 82.6111 | 0.00172 | 21.4304 | 89.7574 | 329.5060 | 12.64914 | – |