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 |
| 2025 Sep 12 17:57 | 2025 Aug 28 14:53:58 | 66.4246 | 0.00624 | 22.2967 | 191.9618 | 140.5467 | 2.13837 | – |
| 2025 Sep 11 17:57 | 2025 Aug 28 14:53:58 | 66.4246 | 0.00624 | 22.2967 | 191.9618 | 140.5467 | 2.13837 | – |
| 2025 Sep 10 17:56 | 2025 Aug 28 14:53:58 | 66.4246 | 0.00624 | 22.2967 | 191.9618 | 140.5467 | 2.13837 | – |
| 2025 Sep 08 17:57 | 2025 Aug 28 14:53:58 | 66.4246 | 0.00624 | 22.2967 | 191.9618 | 140.5467 | 2.13837 | – |
| 2025 Sep 07 17:56 | 2025 Aug 28 14:53:58 | 66.4246 | 0.00624 | 22.2967 | 191.9618 | 140.5467 | 2.13837 | – |
| 2025 Sep 06 20:41 | 2025 Aug 28 14:53:58 | 66.4246 | 0.00624 | 22.2967 | 191.9618 | 140.5467 | 2.13837 | – |
| 2025 Sep 03 17:57 | 2025 Aug 28 14:53:58 | 66.4246 | 0.00624 | 22.2967 | 191.9618 | 140.5467 | 2.13837 | – |
| 2025 Sep 02 17:56 | 2025 Aug 27 17:32:00 | 66.4249 | 0.00625 | 22.2986 | 191.9243 | 140.5467 | 2.13837 | – |
| 2025 Sep 01 17:56 | 2025 Aug 27 17:32:00 | 66.4249 | 0.00625 | 22.2986 | 191.9243 | 140.5467 | 2.13837 | – |
| 2025 Aug 31 17:56 | 2025 Aug 27 17:32:00 | 66.4249 | 0.00625 | 22.2986 | 191.9243 | 140.5467 | 2.13837 | – |
| 2025 Aug 30 17:56 | 2025 Aug 27 17:32:00 | 66.4249 | 0.00625 | 22.2986 | 191.9243 | 140.5467 | 2.13837 | – |
| 2025 Aug 29 17:56 | 2025 Aug 27 17:32:00 | 66.4249 | 0.00625 | 22.2986 | 191.9243 | 140.5467 | 2.13837 | – |
| 2025 Aug 28 17:57 | 2025 Aug 27 17:32:00 | 66.4249 | 0.00625 | 22.2986 | 191.9243 | 140.5467 | 2.13837 | – |
| 2025 Aug 27 17:56 | 2025 Aug 21 06:31:25 | 66.4277 | 0.00624 | 22.3128 | 191.9384 | 140.5467 | 2.13837 | – |
| 2025 Aug 26 17:56 | 2025 Aug 21 06:31:25 | 66.4277 | 0.00624 | 22.3128 | 191.9384 | 140.5467 | 2.13837 | – |
| 2025 Aug 25 17:56 | 2025 Aug 21 06:31:25 | 66.4277 | 0.00624 | 22.3128 | 191.9384 | 140.5467 | 2.13837 | – |
| 2025 Aug 24 17:56 | 2025 Aug 21 06:31:25 | 66.4277 | 0.00624 | 22.3128 | 191.9384 | 140.5467 | 2.13837 | – |
| 2025 Aug 23 17:56 | 2025 Aug 21 06:31:25 | 66.4277 | 0.00624 | 22.3128 | 191.9384 | 140.5467 | 2.13837 | – |
| 2025 Aug 22 17:56 | 2025 Aug 17 21:39:57 | 66.4290 | 0.00625 | 22.3202 | 192.1547 | 140.5467 | 2.13837 | – |
| 2025 Aug 20 17:56 | 2025 Aug 17 21:39:57 | 66.4290 | 0.00625 | 22.3202 | 192.1547 | 140.5467 | 2.13837 | – |
| 2025 Aug 19 17:56 | 2025 Aug 17 21:39:57 | 66.4290 | 0.00625 | 22.3202 | 192.1547 | 140.5467 | 2.13837 | – |
| 2025 Aug 18 17:56 | 2025 Aug 17 21:39:57 | 66.4290 | 0.00625 | 22.3202 | 192.1547 | 140.5467 | 2.13837 | – |