Orbital elements of COSMOS 1721
| Launched | 8 January 1986 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 16454 |
| 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 Nov 16 18:58 | 2025 Nov 08 18:53:24 | 73.9858 | 0.00362 | 8.9594 | 181.0164 | 190.6225 | 12.52382 | – |
| 2025 Nov 15 18:57 | 2025 Nov 08 18:53:24 | 73.9858 | 0.00362 | 8.9594 | 181.0164 | 190.6225 | 12.52382 | – |
| 2025 Nov 13 18:56 | 2025 Nov 08 18:53:24 | 73.9858 | 0.00362 | 8.9594 | 181.0164 | 190.6225 | 12.52382 | – |
| 2025 Nov 12 18:57 | 2025 Nov 08 18:53:24 | 73.9858 | 0.00362 | 8.9594 | 181.0164 | 190.6225 | 12.52382 | – |
| 2025 Nov 11 18:55 | 2025 Nov 08 18:53:24 | 73.9858 | 0.00362 | 8.9594 | 181.0164 | 190.6225 | 12.52382 | – |
| 2025 Nov 10 18:57 | 2025 Nov 08 18:53:24 | 73.9858 | 0.00362 | 8.9594 | 181.0164 | 190.6225 | 12.52382 | – |
| 2025 Nov 09 18:57 | 2025 Nov 08 18:53:24 | 73.9858 | 0.00362 | 8.9594 | 181.0164 | 190.6225 | 12.52382 | – |
| 2025 Nov 08 18:56 | 2025 Nov 02 00:29:13 | 73.9862 | 0.00363 | 9.5631 | 191.1795 | 190.6225 | 12.52382 | – |
| 2025 Nov 07 18:57 | 2025 Nov 02 00:29:13 | 73.9862 | 0.00363 | 9.5631 | 191.1795 | 190.6225 | 12.52382 | – |
| 2025 Nov 05 18:57 | 2025 Nov 02 00:29:13 | 73.9862 | 0.00363 | 9.5631 | 191.1795 | 190.6225 | 12.52382 | – |
| 2025 Nov 04 18:57 | 2025 Nov 02 00:29:13 | 73.9862 | 0.00363 | 9.5631 | 191.1795 | 190.6225 | 12.52382 | – |
| 2025 Nov 03 18:57 | 2025 Nov 02 00:29:13 | 73.9862 | 0.00363 | 9.5631 | 191.1795 | 190.6225 | 12.52382 | – |
| 2025 Nov 02 18:57 | 2025 Oct 29 08:37:20 | 73.9866 | 0.00364 | 9.8897 | 196.6947 | 190.6225 | 12.52382 | – |
| 2025 Nov 01 18:58 | 2025 Oct 29 08:37:20 | 73.9866 | 0.00364 | 9.8897 | 196.6947 | 190.6225 | 12.52382 | – |
| 2025 Oct 31 18:57 | 2025 Oct 29 08:37:20 | 73.9866 | 0.00364 | 9.8897 | 196.6947 | 190.6225 | 12.52382 | – |
| 2025 Oct 30 18:57 | 2025 Oct 29 08:37:20 | 73.9866 | 0.00364 | 9.8897 | 196.6947 | 190.6225 | 12.52382 | – |
| 2025 Oct 29 18:57 | 2025 Oct 29 08:37:20 | 73.9866 | 0.00364 | 9.8897 | 196.6947 | 190.6225 | 12.52382 | – |
| 2025 Oct 28 18:57 | 2025 Oct 23 23:51:55 | 73.9876 | 0.00365 | 10.3683 | 204.7349 | 190.6225 | 12.52382 | – |
| 2025 Oct 27 18:57 | 2025 Oct 23 23:51:55 | 73.9876 | 0.00365 | 10.3683 | 204.7349 | 190.6225 | 12.52382 | – |
| 2025 Oct 26 18:57 | 2025 Oct 23 23:51:55 | 73.9876 | 0.00365 | 10.3683 | 204.7349 | 190.6225 | 12.52382 | – |
| 2025 Oct 25 17:57 | 2025 Oct 23 23:51:55 | 73.9876 | 0.00365 | 10.3683 | 204.7349 | 190.6225 | 12.52382 | – |
| 2025 Oct 24 17:57 | 2025 Oct 23 23:51:55 | 73.9876 | 0.00365 | 10.3683 | 204.7349 | 190.6225 | 12.52382 | – |
| 2025 Oct 22 17:56 | 2025 Oct 18 02:13:09 | 73.9885 | 0.00366 | 10.8947 | 213.5768 | 190.6225 | 12.52382 | – |
| 2025 Oct 21 17:56 | 2025 Oct 18 02:13:09 | 73.9885 | 0.00366 | 10.8947 | 213.5768 | 190.6225 | 12.52382 | – |
| 2025 Oct 20 17:56 | 2025 Oct 18 02:13:09 | 73.9885 | 0.00366 | 10.8947 | 213.5768 | 190.6225 | 12.52382 | – |