Orbital elements of COSMOS 2139
| Launched | 3 April 1991 |
| Flight ended | – |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 21216 |
| Alternative names |
GLONASS GLONASS 42 GN 750 |
| 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 21 18:57 | 2025 Dec 19 05:31:08 | 64.4830 | 0.00164 | 20.7146 | 224.4334 | 135.4256 | 2.13106 | – |
| 2025 Dec 20 18:57 | 2025 Dec 19 05:31:08 | 64.4830 | 0.00164 | 20.7146 | 224.4334 | 135.4256 | 2.13106 | – |
| 2025 Dec 19 18:57 | 2025 Dec 10 07:32:26 | 64.4889 | 0.00166 | 20.7353 | 224.3527 | 135.4256 | 2.13106 | – |
| 2025 Dec 18 18:57 | 2025 Dec 10 07:32:26 | 64.4889 | 0.00166 | 20.7353 | 224.3527 | 135.4256 | 2.13106 | – |
| 2025 Dec 17 18:58 | 2025 Dec 10 07:32:26 | 64.4889 | 0.00166 | 20.7353 | 224.3527 | 135.4256 | 2.13106 | – |
| 2025 Dec 16 18:57 | 2025 Dec 10 07:32:26 | 64.4889 | 0.00166 | 20.7353 | 224.3527 | 135.4256 | 2.13106 | – |
| 2025 Dec 15 18:58 | 2025 Dec 10 07:32:26 | 64.4889 | 0.00166 | 20.7353 | 224.3527 | 135.4256 | 2.13106 | – |
| 2025 Dec 14 18:56 | 2025 Dec 10 07:32:26 | 64.4889 | 0.00166 | 20.7353 | 224.3527 | 135.4256 | 2.13106 | – |
| 2025 Dec 13 18:56 | 2025 Dec 10 07:32:26 | 64.4889 | 0.00166 | 20.7353 | 224.3527 | 135.4256 | 2.13106 | – |
| 2025 Dec 12 18:57 | 2025 Dec 10 07:32:26 | 64.4889 | 0.00166 | 20.7353 | 224.3527 | 135.4256 | 2.13106 | – |
| 2025 Dec 11 18:56 | 2025 Dec 04 05:08:02 | 64.4934 | 0.00168 | 20.7496 | 224.3178 | 135.4256 | 2.13106 | – |
| 2025 Dec 10 18:56 | 2025 Dec 04 05:08:02 | 64.4934 | 0.00168 | 20.7496 | 224.3178 | 135.4256 | 2.13106 | – |
| 2025 Dec 09 18:56 | 2025 Dec 04 05:08:02 | 64.4934 | 0.00168 | 20.7496 | 224.3178 | 135.4256 | 2.13106 | – |
| 2025 Dec 08 18:56 | 2025 Dec 04 05:08:02 | 64.4934 | 0.00168 | 20.7496 | 224.3178 | 135.4256 | 2.13106 | – |
| 2025 Dec 07 18:56 | 2025 Dec 04 05:08:02 | 64.4934 | 0.00168 | 20.7496 | 224.3178 | 135.4256 | 2.13106 | – |
| 2025 Dec 06 18:56 | 2025 Nov 29 01:15:07 | 64.4966 | 0.00170 | 20.7616 | 224.1588 | 135.4256 | 2.13106 | – |
| 2025 Dec 05 18:57 | 2025 Nov 29 01:15:07 | 64.4966 | 0.00170 | 20.7616 | 224.1588 | 135.4256 | 2.13106 | – |
| 2025 Dec 04 18:57 | 2025 Nov 29 01:15:07 | 64.4966 | 0.00170 | 20.7616 | 224.1588 | 135.4256 | 2.13106 | – |
| 2025 Dec 03 18:56 | 2025 Nov 29 01:15:07 | 64.4966 | 0.00170 | 20.7616 | 224.1588 | 135.4256 | 2.13106 | – |
| 2025 Dec 02 18:56 | 2025 Nov 29 01:15:07 | 64.4966 | 0.00170 | 20.7616 | 224.1588 | 135.4256 | 2.13106 | – |
| 2025 Nov 29 18:56 | 2025 Nov 19 16:00:40 | 64.5026 | 0.00171 | 20.7835 | 223.9309 | 135.4256 | 2.13106 | – |
| 2025 Nov 28 18:57 | 2025 Nov 19 16:00:40 | 64.5026 | 0.00171 | 20.7835 | 223.9309 | 135.4256 | 2.13106 | – |
| 2025 Nov 27 18:57 | 2025 Nov 19 16:00:40 | 64.5026 | 0.00171 | 20.7835 | 223.9309 | 135.4256 | 2.13106 | – |
| 2025 Nov 26 18:57 | 2025 Nov 19 16:00:40 | 64.5026 | 0.00171 | 20.7835 | 223.9309 | 135.4256 | 2.13106 | – |
| 2025 Nov 25 18:57 | 2025 Nov 19 16:00:40 | 64.5026 | 0.00171 | 20.7835 | 223.9309 | 135.4256 | 2.13106 | – |
| 2025 Nov 24 18:56 | 2025 Nov 19 16:00:40 | 64.5026 | 0.00171 | 20.7835 | 223.9309 | 135.4256 | 2.13106 | – |