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 |
| 2023 Jun 06 17:55 | 2023 Jun 05 21:08:39 | 82.6101 | 0.00152 | 21.2199 | 284.5073 | 75.4336 | 12.64888 | – |
| 2023 Jun 05 17:55 | 2023 May 30 22:46:04 | 82.6100 | 0.00153 | 21.4725 | 299.0667 | 75.4336 | 12.64888 | – |
| 2023 Jun 04 17:57 | 2023 May 30 22:46:04 | 82.6100 | 0.00153 | 21.4725 | 299.0667 | 75.4336 | 12.64888 | – |
| 2023 Jun 03 17:59 | 2023 May 30 22:46:04 | 82.6100 | 0.00153 | 21.4725 | 299.0667 | 75.4336 | 12.64888 | – |
| 2023 Jun 02 17:56 | 2023 May 30 22:46:04 | 82.6100 | 0.00153 | 21.4725 | 299.0667 | 75.4336 | 12.64888 | – |
| 2023 Jun 01 17:58 | 2023 May 30 22:46:04 | 82.6100 | 0.00153 | 21.4725 | 299.0667 | 75.4336 | 12.64888 | – |
| 2023 May 31 17:57 | 2023 May 30 22:46:04 | 82.6100 | 0.00153 | 21.4725 | 299.0667 | 75.4336 | 12.64888 | – |
| 2023 May 30 17:56 | 2023 May 24 14:53:59 | 82.6101 | 0.00154 | 21.7419 | 314.4373 | 75.4336 | 12.64888 | – |
| 2023 May 29 17:56 | 2023 May 24 14:53:59 | 82.6101 | 0.00154 | 21.7419 | 314.4373 | 75.4336 | 12.64888 | – |
| 2023 May 28 17:56 | 2023 May 24 14:53:59 | 82.6101 | 0.00154 | 21.7419 | 314.4373 | 75.4336 | 12.64888 | – |
| 2023 May 27 17:55 | 2023 May 24 14:53:59 | 82.6101 | 0.00154 | 21.7419 | 314.4373 | 75.4336 | 12.64888 | – |
| 2023 May 26 17:58 | 2023 May 24 14:53:59 | 82.6101 | 0.00154 | 21.7419 | 314.4373 | 75.4336 | 12.64888 | – |
| 2023 May 25 17:57 | 2023 May 24 14:53:59 | 82.6101 | 0.00154 | 21.7419 | 314.4373 | 75.4336 | 12.64888 | – |
| 2023 May 24 17:57 | 2023 May 19 05:48:43 | 82.6101 | 0.00156 | 21.9709 | 327.2847 | 75.4336 | 12.64888 | – |
| 2023 May 23 17:57 | 2023 May 19 05:48:43 | 82.6101 | 0.00156 | 21.9709 | 327.2847 | 75.4336 | 12.64888 | – |
| 2023 May 22 17:57 | 2023 May 19 05:48:43 | 82.6101 | 0.00156 | 21.9709 | 327.2847 | 75.4336 | 12.64888 | – |
| 2023 May 21 17:55 | 2023 May 19 05:48:43 | 82.6101 | 0.00156 | 21.9709 | 327.2847 | 75.4336 | 12.64888 | – |
| 2023 May 20 17:56 | 2023 May 19 05:48:43 | 82.6101 | 0.00156 | 21.9709 | 327.2847 | 75.4336 | 12.64888 | – |
| 2023 May 19 17:57 | 2023 May 19 05:48:43 | 82.6101 | 0.00156 | 21.9709 | 327.2847 | 75.4336 | 12.64888 | – |
| 2023 May 18 17:56 | 2023 May 14 13:48:34 | 82.6105 | 0.00159 | 22.1696 | 338.2831 | 75.4336 | 12.64888 | – |
| 2023 May 17 17:56 | 2023 May 14 13:48:34 | 82.6105 | 0.00159 | 22.1696 | 338.2831 | 75.4336 | 12.64888 | – |
| 2023 May 16 17:55 | 2023 May 14 13:48:34 | 82.6105 | 0.00159 | 22.1696 | 338.2831 | 75.4336 | 12.64888 | – |
| 2023 May 15 17:56 | 2023 May 14 13:48:34 | 82.6105 | 0.00159 | 22.1696 | 338.2831 | 75.4336 | 12.64888 | – |
| 2023 May 14 17:56 | 2023 May 14 13:48:34 | 82.6105 | 0.00159 | 22.1696 | 338.2831 | 75.4336 | 12.64888 | – |
| 2023 May 13 17:57 | 2023 May 08 19:13:47 | 82.6113 | 0.00161 | 22.4154 | 351.6697 | 75.4336 | 12.64888 | – |
| 2023 May 12 17:56 | 2023 May 08 19:13:47 | 82.6113 | 0.00161 | 22.4154 | 351.6697 | 75.4336 | 12.64888 | – |
| 2023 May 11 17:58 | 2023 May 08 19:13:47 | 82.6113 | 0.00161 | 22.4154 | 351.6697 | 75.4336 | 12.64888 | – |
| 2023 May 10 17:55 | 2023 May 08 19:13:47 | 82.6113 | 0.00161 | 22.4154 | 351.6697 | 75.4336 | 12.64888 | – |