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 Apr 16 17:57 | 2026 Apr 12 17:20:20 | 66.3245 | 0.00626 | 21.7968 | 189.8909 | 6.7815 | 2.13837 | – |
| 2026 Apr 14 17:57 | 2026 Apr 12 17:20:20 | 66.3245 | 0.00626 | 21.7968 | 189.8909 | 6.7815 | 2.13837 | – |
| 2026 Apr 13 17:57 | 2026 Apr 12 17:20:20 | 66.3245 | 0.00626 | 21.7968 | 189.8909 | 6.7815 | 2.13837 | – |
| 2026 Apr 12 17:57 | 2026 Apr 06 14:51:59 | 66.3277 | 0.00625 | 21.8102 | 188.8796 | 6.7815 | 2.13837 | – |
| 2026 Apr 11 17:57 | 2026 Apr 06 14:51:59 | 66.3277 | 0.00625 | 21.8102 | 188.8796 | 6.7815 | 2.13837 | – |
| 2026 Apr 10 17:58 | 2026 Apr 06 14:51:59 | 66.3277 | 0.00625 | 21.8102 | 188.8796 | 6.7815 | 2.13837 | – |
| 2026 Apr 09 18:01 | 2026 Apr 06 14:51:59 | 66.3277 | 0.00625 | 21.8102 | 188.8796 | 6.7815 | 2.13837 | – |
| 2026 Apr 08 17:57 | 2026 Apr 06 14:51:59 | 66.3277 | 0.00625 | 21.8102 | 188.8796 | 6.7815 | 2.13837 | – |
| 2026 Apr 05 17:56 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Apr 04 17:57 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Apr 03 17:56 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Apr 02 18:03 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Mar 31 17:57 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Mar 30 17:58 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Mar 29 17:57 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Mar 28 18:57 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Mar 27 18:57 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Mar 26 18:57 | 2026 Mar 23 13:56:13 | 66.3331 | 0.00626 | 21.8412 | 190.6149 | 6.7815 | 2.13837 | – |
| 2026 Mar 25 18:56 | 2026 Mar 20 07:36:35 | 66.3353 | 0.00625 | 21.8484 | 190.8993 | 6.7815 | 2.13837 | – |
| 2026 Mar 24 18:56 | 2026 Mar 20 07:36:35 | 66.3353 | 0.00625 | 21.8484 | 190.8993 | 6.7815 | 2.13837 | – |
| 2026 Mar 23 18:56 | 2026 Mar 20 07:36:35 | 66.3353 | 0.00625 | 21.8484 | 190.8993 | 6.7815 | 2.13837 | – |
| 2026 Mar 22 18:56 | 2026 Mar 20 07:36:35 | 66.3353 | 0.00625 | 21.8484 | 190.8993 | 6.7815 | 2.13837 | – |
| 2026 Mar 21 19:05 | 2026 Mar 20 07:36:35 | 66.3353 | 0.00625 | 21.8484 | 190.8993 | 6.7815 | 2.13837 | – |