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 May 09 17:57 | 2025 May 09 02:33:27 | 73.9923 | 0.00358 | 1.3452 | 96.9198 | 55.1666 | 12.52378 | – |
| 2025 May 08 17:56 | 2025 May 03 12:28:38 | 73.9925 | 0.00358 | 1.8435 | 105.4609 | 55.1666 | 12.52378 | – |
| 2025 May 07 17:56 | 2025 May 03 12:28:38 | 73.9925 | 0.00358 | 1.8435 | 105.4609 | 55.1666 | 12.52378 | – |
| 2025 May 06 17:57 | 2025 May 03 12:28:38 | 73.9925 | 0.00358 | 1.8435 | 105.4609 | 55.1666 | 12.52378 | – |
| 2025 May 05 17:56 | 2025 May 03 12:28:38 | 73.9925 | 0.00358 | 1.8435 | 105.4609 | 55.1666 | 12.52378 | – |
| 2025 May 04 17:57 | 2025 May 03 12:28:38 | 73.9925 | 0.00358 | 1.8435 | 105.4609 | 55.1666 | 12.52378 | – |
| 2025 May 03 17:57 | 2025 May 03 12:28:38 | 73.9925 | 0.00358 | 1.8435 | 105.4609 | 55.1666 | 12.52378 | – |
| 2025 May 01 17:56 | 2025 Apr 22 05:51:37 | 73.9917 | 0.00358 | 2.8492 | 122.7294 | 55.1666 | 12.52378 | – |
| 2025 Apr 30 17:56 | 2025 Apr 22 05:51:37 | 73.9917 | 0.00358 | 2.8492 | 122.7294 | 55.1666 | 12.52378 | – |
| 2025 Apr 29 17:57 | 2025 Apr 22 05:51:37 | 73.9917 | 0.00358 | 2.8492 | 122.7294 | 55.1666 | 12.52378 | – |
| 2025 Apr 27 17:56 | 2025 Apr 22 05:51:37 | 73.9917 | 0.00358 | 2.8492 | 122.7294 | 55.1666 | 12.52378 | – |
| 2025 Apr 26 17:57 | 2025 Apr 22 05:51:37 | 73.9917 | 0.00358 | 2.8492 | 122.7294 | 55.1666 | 12.52378 | – |
| 2025 Apr 25 17:56 | 2025 Apr 22 05:51:37 | 73.9917 | 0.00358 | 2.8492 | 122.7294 | 55.1666 | 12.52378 | – |
| 2025 Apr 24 17:56 | 2025 Apr 22 05:51:37 | 73.9917 | 0.00358 | 2.8492 | 122.7294 | 55.1666 | 12.52378 | – |
| 2025 Apr 23 17:57 | 2025 Apr 22 05:51:37 | 73.9917 | 0.00358 | 2.8492 | 122.7294 | 55.1666 | 12.52378 | – |
| 2025 Apr 22 17:56 | 2025 Apr 22 05:51:37 | 73.9917 | 0.00358 | 2.8492 | 122.7294 | 55.1666 | 12.52378 | – |
| 2025 Apr 21 17:57 | 2025 Apr 15 22:07:44 | 73.9905 | 0.00359 | 3.4131 | 132.4490 | 55.1666 | 12.52378 | – |
| 2025 Apr 20 17:56 | 2025 Apr 15 22:07:44 | 73.9905 | 0.00359 | 3.4131 | 132.4490 | 55.1666 | 12.52378 | – |
| 2025 Apr 19 17:56 | 2025 Apr 15 22:07:44 | 73.9905 | 0.00359 | 3.4131 | 132.4490 | 55.1666 | 12.52378 | – |
| 2025 Apr 18 17:57 | 2025 Apr 15 22:07:44 | 73.9905 | 0.00359 | 3.4131 | 132.4490 | 55.1666 | 12.52378 | – |
| 2025 Apr 17 17:56 | 2025 Apr 15 22:07:44 | 73.9905 | 0.00359 | 3.4131 | 132.4490 | 55.1666 | 12.52378 | – |
| 2025 Apr 16 17:57 | 2025 Apr 15 22:07:44 | 73.9905 | 0.00359 | 3.4131 | 132.4490 | 55.1666 | 12.52378 | – |
| 2025 Apr 15 17:56 | 2025 Apr 11 07:26:26 | 73.9895 | 0.00359 | 3.8245 | 139.5151 | 55.1666 | 12.52378 | – |
| 2025 Apr 14 17:56 | 2025 Apr 11 07:26:26 | 73.9895 | 0.00359 | 3.8245 | 139.5151 | 55.1666 | 12.52378 | – |