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 Jul 21 17:57 | 2026 Jul 20 14:34:24 | 66.2769 | 0.00635 | 21.5788 | 190.2828 | 168.5329 | 2.13837 | – |
| 2026 Jul 20 17:57 | 2026 Jul 15 00:46:11 | 66.2800 | 0.00634 | 21.5911 | 190.2693 | 168.5329 | 2.13837 | – |
| 2026 Jul 19 19:06 | 2026 Jul 15 00:46:11 | 66.2800 | 0.00634 | 21.5911 | 190.2693 | 168.5329 | 2.13837 | – |
| 2026 Jul 19 17:57 | 2026 Jul 15 00:46:11 | 66.2800 | 0.00634 | 21.5911 | 190.2693 | 168.5329 | 2.13837 | – |
| 2026 Jul 18 17:57 | 2026 Jul 15 00:46:11 | 66.2800 | 0.00634 | 21.5911 | 190.2693 | 168.5329 | 2.13837 | – |
| 2026 Jul 17 17:57 | 2026 Jul 15 00:46:11 | 66.2800 | 0.00634 | 21.5911 | 190.2693 | 168.5329 | 2.13837 | – |
| 2026 Jul 16 17:56 | 2026 Jul 15 00:46:11 | 66.2800 | 0.00634 | 21.5911 | 190.2693 | 168.5329 | 2.13837 | – |
| 2026 Jul 15 17:57 | 2026 Jul 09 07:32:38 | 66.2831 | 0.00634 | 21.6037 | 190.3574 | 168.5329 | 2.13837 | – |
| 2026 Jul 14 17:56 | 2026 Jul 09 07:32:38 | 66.2831 | 0.00634 | 21.6037 | 190.3574 | 168.5329 | 2.13837 | – |
| 2026 Jul 13 17:56 | 2026 Jul 09 07:32:38 | 66.2831 | 0.00634 | 21.6037 | 190.3574 | 168.5329 | 2.13837 | – |
| 2026 Jul 12 17:56 | 2026 Jul 09 07:32:38 | 66.2831 | 0.00634 | 21.6037 | 190.3574 | 168.5329 | 2.13837 | – |
| 2026 Jul 11 17:56 | 2026 Jul 09 07:32:38 | 66.2831 | 0.00634 | 21.6037 | 190.3574 | 168.5329 | 2.13837 | – |
| 2026 Jul 09 17:56 | 2026 Jul 01 21:29:44 | 66.2872 | 0.00634 | 21.6200 | 190.5043 | 168.5329 | 2.13837 | – |
| 2026 Jul 08 17:56 | 2026 Jul 01 21:29:44 | 66.2872 | 0.00634 | 21.6200 | 190.5043 | 168.5329 | 2.13837 | – |
| 2026 Jul 07 17:56 | 2026 Jul 01 21:29:44 | 66.2872 | 0.00634 | 21.6200 | 190.5043 | 168.5329 | 2.13837 | – |
| 2026 Jul 06 17:57 | 2026 Jul 01 21:29:44 | 66.2872 | 0.00634 | 21.6200 | 190.5043 | 168.5329 | 2.13837 | – |
| 2026 Jul 05 17:56 | 2026 Jul 01 21:29:44 | 66.2872 | 0.00634 | 21.6200 | 190.5043 | 168.5329 | 2.13837 | – |
| 2026 Jul 04 17:56 | 2026 Jun 28 15:03:27 | 66.2890 | 0.00634 | 21.6272 | 190.3934 | 168.5329 | 2.13837 | – |
| 2026 Jul 03 17:57 | 2026 Jun 28 15:03:27 | 66.2890 | 0.00634 | 21.6272 | 190.3934 | 168.5329 | 2.13837 | – |
| 2026 Jul 02 17:56 | 2026 Jun 28 15:03:27 | 66.2890 | 0.00634 | 21.6272 | 190.3934 | 168.5329 | 2.13837 | – |
| 2026 Jul 01 17:56 | 2026 Jun 28 15:03:27 | 66.2890 | 0.00634 | 21.6272 | 190.3934 | 168.5329 | 2.13837 | – |
| 2026 Jun 30 17:56 | 2026 Jun 28 15:03:27 | 66.2890 | 0.00634 | 21.6272 | 190.3934 | 168.5329 | 2.13837 | – |
| 2026 Jun 29 17:57 | 2026 Jun 28 15:03:27 | 66.2890 | 0.00634 | 21.6272 | 190.3934 | 168.5329 | 2.13837 | – |
| 2026 Jun 28 17:56 | 2026 Jun 22 14:28:17 | 66.2920 | 0.00633 | 21.6405 | 190.3942 | 168.5329 | 2.13837 | – |
| 2026 Jun 27 17:55 | 2026 Jun 22 14:28:17 | 66.2920 | 0.00633 | 21.6405 | 190.3942 | 168.5329 | 2.13837 | – |
| 2026 Jun 26 17:56 | 2026 Jun 22 14:28:17 | 66.2920 | 0.00633 | 21.6405 | 190.3942 | 168.5329 | 2.13837 | – |
| 2026 Jun 25 17:56 | 2026 Jun 22 14:28:17 | 66.2920 | 0.00633 | 21.6405 | 190.3942 | 168.5329 | 2.13837 | – |
| 2026 Jun 24 17:55 | 2026 Jun 22 14:28:17 | 66.2920 | 0.00633 | 21.6405 | 190.3942 | 168.5329 | 2.13837 | – |