Orbital elements of COSMOS 1521
| Launched | 28 December 1983 |
| Flight ended | – |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 14592 |
| Alternative names |
GLONASS GLONASS-GVM 4 |
| 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 Mar 03 18:56 | 2026 Feb 20 17:40:13 | 66.3483 | 0.00625 | 21.9092 | 191.3559 | 355.8482 | 2.13837 | – |
| 2026 Mar 02 18:57 | 2026 Feb 20 17:40:13 | 66.3483 | 0.00625 | 21.9092 | 191.3559 | 355.8482 | 2.13837 | – |
| 2026 Mar 01 18:57 | 2026 Feb 20 17:40:13 | 66.3483 | 0.00625 | 21.9092 | 191.3559 | 355.8482 | 2.13837 | – |
| 2026 Feb 28 18:56 | 2026 Feb 20 17:40:13 | 66.3483 | 0.00625 | 21.9092 | 191.3559 | 355.8482 | 2.13837 | – |
| 2026 Feb 27 19:05 | 2026 Feb 20 17:40:13 | 66.3483 | 0.00625 | 21.9092 | 191.3559 | 355.8482 | 2.13837 | – |
| 2026 Feb 26 20:45 | 2026 Feb 20 17:40:13 | 66.3483 | 0.00625 | 21.9092 | 191.3559 | 355.8482 | 2.13837 | – |
| 2026 Feb 05 18:58 | 2026 Jan 31 01:21:54 | 66.3587 | 0.00625 | 21.9547 | 191.5632 | 355.8482 | 2.13837 | – |
| 2026 Feb 04 18:57 | 2026 Jan 31 01:21:54 | 66.3587 | 0.00625 | 21.9547 | 191.5632 | 355.8482 | 2.13837 | – |