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 Jun 12 17:56 | 2026 Jun 11 08:44:25 | 66.2977 | 0.00632 | 21.6653 | 190.3848 | 198.8805 | 2.13837 | – |
| 2026 Jun 10 17:56 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 Jun 09 17:57 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 Jun 08 17:56 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 Jun 07 17:56 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 Jun 06 17:56 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 Jun 05 17:56 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 Jun 04 17:57 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 Jun 02 17:56 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 Jun 01 17:57 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 May 31 17:58 | 2026 May 27 08:34:48 | 66.3043 | 0.00630 | 21.6983 | 190.3749 | 198.8805 | 2.13837 | – |
| 2026 May 30 17:57 | 2026 May 24 13:18:01 | 66.3032 | 0.00565 | 21.7039 | 193.1866 | 198.8805 | 2.13837 | – |
| 2026 May 29 17:57 | 2026 May 24 13:18:01 | 66.3032 | 0.00565 | 21.7039 | 193.1866 | 198.8805 | 2.13837 | – |
| 2026 May 28 17:56 | 2026 May 24 13:18:01 | 66.3032 | 0.00565 | 21.7039 | 193.1866 | 198.8805 | 2.13837 | – |
| 2026 May 27 17:57 | 2026 May 24 13:18:01 | 66.3032 | 0.00565 | 21.7039 | 193.1866 | 198.8805 | 2.13837 | – |
| 2026 May 26 17:57 | 2026 May 24 13:18:01 | 66.3032 | 0.00565 | 21.7039 | 193.1866 | 198.8805 | 2.13837 | – |
| 2026 May 25 17:57 | 2026 May 19 04:13:11 | 66.3091 | 0.00640 | 21.7164 | 190.3821 | 198.8805 | 2.13837 | – |
| 2026 May 24 17:57 | 2026 May 19 04:13:11 | 66.3091 | 0.00640 | 21.7164 | 190.3821 | 198.8805 | 2.13837 | – |
| 2026 May 23 17:58 | 2026 May 19 04:13:11 | 66.3091 | 0.00640 | 21.7164 | 190.3821 | 198.8805 | 2.13837 | – |
| 2026 May 22 17:57 | 2026 May 19 04:13:11 | 66.3091 | 0.00640 | 21.7164 | 190.3821 | 198.8805 | 2.13837 | – |
| 2026 May 21 17:57 | 2026 May 19 04:13:11 | 66.3091 | 0.00640 | 21.7164 | 190.3821 | 198.8805 | 2.13837 | – |
| 2026 May 20 17:57 | 2026 May 13 02:38:44 | 66.3107 | 0.00632 | 21.7297 | 190.4243 | 198.8805 | 2.13837 | – |
| 2026 May 19 17:58 | 2026 May 13 02:38:44 | 66.3107 | 0.00632 | 21.7297 | 190.4243 | 198.8805 | 2.13837 | – |
| 2026 May 18 17:57 | 2026 May 13 02:38:44 | 66.3107 | 0.00632 | 21.7297 | 190.4243 | 198.8805 | 2.13837 | – |
| 2026 May 17 17:57 | 2026 May 13 02:38:44 | 66.3107 | 0.00632 | 21.7297 | 190.4243 | 198.8805 | 2.13837 | – |
| 2026 May 16 17:56 | 2026 May 13 02:38:44 | 66.3107 | 0.00632 | 21.7297 | 190.4243 | 198.8805 | 2.13837 | – |