Orbital elements of COSMOS 839
| Launched | 7 July 1976 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 9011 |
| 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 Feb 05 18:58 | 2026 Feb 02 11:07:52 | 65.8530 | 0.07064 | 10.9499 | 339.5830 | 17.8166 | 12.32893 | – |
| 2026 Feb 04 18:57 | 2026 Feb 02 11:07:52 | 65.8530 | 0.07064 | 10.9499 | 339.5830 | 17.8166 | 12.32893 | – |
| 2026 Feb 03 18:56 | 2026 Feb 02 11:07:52 | 65.8530 | 0.07064 | 10.9499 | 339.5830 | 17.8166 | 12.32893 | – |
| 2026 Feb 02 18:56 | 2026 Feb 02 11:07:52 | 65.8530 | 0.07064 | 10.9499 | 339.5830 | 17.8166 | 12.32893 | – |
| 2026 Feb 01 18:56 | 2026 Jan 27 18:51:21 | 65.8523 | 0.07061 | 11.6816 | 341.7723 | 17.8166 | 12.32893 | – |
| 2026 Jan 31 18:56 | 2026 Jan 27 18:51:21 | 65.8523 | 0.07061 | 11.6816 | 341.7723 | 17.8166 | 12.32893 | – |
| 2026 Jan 30 18:57 | 2026 Jan 27 18:51:21 | 65.8523 | 0.07061 | 11.6816 | 341.7723 | 17.8166 | 12.32893 | – |
| 2026 Jan 29 18:56 | 2026 Jan 27 18:51:21 | 65.8523 | 0.07061 | 11.6816 | 341.7723 | 17.8166 | 12.32893 | – |
| 2026 Jan 28 18:56 | 2026 Jan 27 18:51:21 | 65.8523 | 0.07061 | 11.6816 | 341.7723 | 17.8166 | 12.32893 | – |
| 2026 Jan 27 18:56 | 2026 Jan 22 10:22:03 | 65.8512 | 0.07059 | 12.3715 | 343.8387 | 17.8166 | 12.32893 | – |
| 2026 Jan 26 18:57 | 2026 Jan 22 10:22:03 | 65.8512 | 0.07059 | 12.3715 | 343.8387 | 17.8166 | 12.32893 | – |
| 2026 Jan 25 18:57 | 2026 Jan 22 10:22:03 | 65.8512 | 0.07059 | 12.3715 | 343.8387 | 17.8166 | 12.32893 | – |