Orbital elements of COSMOS 1999
| Launched | 9 February 1989 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 19790 |
| 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 |
| 2026 Apr 30 17:56 | 2026 Apr 30 14:26:22 | 82.6218 | 0.00193 | 23.8089 | 334.3860 | 40.2564 | 12.65749 | – |
| 2026 Apr 29 17:57 | 2026 Apr 24 05:19:56 | 82.6226 | 0.00196 | 0.0805 | 349.0942 | 40.2564 | 12.65749 | – |
| 2026 Apr 28 17:56 | 2026 Apr 24 05:19:56 | 82.6226 | 0.00196 | 0.0805 | 349.0942 | 40.2564 | 12.65749 | – |
| 2026 Apr 27 17:58 | 2026 Apr 24 05:19:56 | 82.6226 | 0.00196 | 0.0805 | 349.0942 | 40.2564 | 12.65749 | – |
| 2026 Apr 26 17:58 | 2026 Apr 24 05:19:56 | 82.6226 | 0.00196 | 0.0805 | 349.0942 | 40.2564 | 12.65749 | – |
| 2026 Apr 25 17:58 | 2026 Apr 24 05:19:56 | 82.6226 | 0.00196 | 0.0805 | 349.0942 | 40.2564 | 12.65749 | – |
| 2026 Apr 24 17:59 | 2026 Apr 24 05:19:56 | 82.6226 | 0.00196 | 0.0805 | 349.0942 | 40.2564 | 12.65749 | – |
| 2026 Apr 23 17:57 | 2026 Apr 19 11:47:30 | 82.6232 | 0.00198 | 0.2818 | 359.9510 | 40.2564 | 12.65749 | – |
| 2026 Apr 22 17:57 | 2026 Apr 19 11:47:30 | 82.6232 | 0.00198 | 0.2818 | 359.9510 | 40.2564 | 12.65749 | – |
| 2026 Apr 21 17:57 | 2026 Apr 19 11:47:30 | 82.6232 | 0.00198 | 0.2818 | 359.9510 | 40.2564 | 12.65749 | – |
| 2026 Apr 20 17:57 | 2026 Apr 19 11:47:30 | 82.6232 | 0.00198 | 0.2818 | 359.9510 | 40.2564 | 12.65749 | – |
| 2026 Apr 19 17:58 | 2026 Apr 19 11:47:30 | 82.6232 | 0.00198 | 0.2818 | 359.9510 | 40.2564 | 12.65749 | – |
| 2026 Apr 18 17:56 | 2026 Apr 13 05:38:57 | 82.6237 | 0.00201 | 0.5481 | 13.9115 | 40.2564 | 12.65749 | – |
| 2026 Apr 16 17:57 | 2026 Apr 13 05:38:57 | 82.6237 | 0.00201 | 0.5481 | 13.9115 | 40.2564 | 12.65749 | – |
| 2026 Apr 14 17:57 | 2026 Apr 13 05:38:57 | 82.6237 | 0.00201 | 0.5481 | 13.9115 | 40.2564 | 12.65749 | – |
| 2026 Apr 13 17:57 | 2026 Apr 13 05:38:57 | 82.6237 | 0.00201 | 0.5481 | 13.9115 | 40.2564 | 12.65749 | – |
| 2026 Apr 12 17:57 | 2026 Apr 08 12:05:49 | 82.6237 | 0.00202 | 0.7494 | 24.4068 | 40.2564 | 12.65749 | – |
| 2026 Apr 11 17:57 | 2026 Apr 08 12:05:49 | 82.6237 | 0.00202 | 0.7494 | 24.4068 | 40.2564 | 12.65749 | – |
| 2026 Apr 10 17:58 | 2026 Apr 08 12:05:49 | 82.6237 | 0.00202 | 0.7494 | 24.4068 | 40.2564 | 12.65749 | – |
| 2026 Apr 09 18:01 | 2026 Apr 08 12:05:49 | 82.6237 | 0.00202 | 0.7494 | 24.4068 | 40.2564 | 12.65749 | – |
| 2026 Apr 08 17:57 | 2026 Apr 08 12:05:49 | 82.6237 | 0.00202 | 0.7494 | 24.4068 | 40.2564 | 12.65749 | – |
| 2026 Apr 07 17:57 | 2026 Apr 02 07:51:41 | 82.6238 | 0.00205 | 1.0123 | 38.0012 | 40.2564 | 12.65749 | – |
| 2026 Apr 06 17:57 | 2026 Apr 02 07:51:41 | 82.6238 | 0.00205 | 1.0123 | 38.0012 | 40.2564 | 12.65749 | – |
| 2026 Apr 05 17:56 | 2026 Apr 02 07:51:41 | 82.6238 | 0.00205 | 1.0123 | 38.0012 | 40.2564 | 12.65749 | – |
| 2026 Apr 04 17:57 | 2026 Apr 02 07:51:41 | 82.6238 | 0.00205 | 1.0123 | 38.0012 | 40.2564 | 12.65749 | – |
| 2026 Apr 03 17:56 | 2026 Apr 02 07:51:41 | 82.6238 | 0.00205 | 1.0123 | 38.0012 | 40.2564 | 12.65749 | – |