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 |
| 2026 Mar 15 18:56 | 2026 Mar 15 10:10:30 | 73.9917 | 0.00362 | 21.6623 | 348.4727 | 184.8290 | 12.52384 | – |
| 2026 Mar 14 18:56 | 2026 Mar 10 03:32:16 | 73.9926 | 0.00362 | 22.1329 | 356.3526 | 184.8290 | 12.52384 | – |
| 2026 Mar 13 18:57 | 2026 Mar 10 03:32:16 | 73.9926 | 0.00362 | 22.1329 | 356.3526 | 184.8290 | 12.52384 | – |
| 2026 Mar 12 18:57 | 2026 Mar 10 03:32:16 | 73.9926 | 0.00362 | 22.1329 | 356.3526 | 184.8290 | 12.52384 | – |
| 2026 Mar 11 18:56 | 2026 Mar 10 03:32:16 | 73.9926 | 0.00362 | 22.1329 | 356.3526 | 184.8290 | 12.52384 | – |
| 2026 Mar 10 18:56 | 2026 Mar 10 03:32:16 | 73.9926 | 0.00362 | 22.1329 | 356.3526 | 184.8290 | 12.52384 | – |
| 2026 Mar 09 18:56 | 2026 Mar 04 11:14:39 | 73.9932 | 0.00360 | 22.6394 | 4.8181 | 184.8290 | 12.52384 | – |
| 2026 Mar 08 18:57 | 2026 Mar 04 11:14:39 | 73.9932 | 0.00360 | 22.6394 | 4.8181 | 184.8290 | 12.52384 | – |
| 2026 Mar 07 18:57 | 2026 Mar 04 11:14:39 | 73.9932 | 0.00360 | 22.6394 | 4.8181 | 184.8290 | 12.52384 | – |
| 2026 Mar 06 18:56 | 2026 Mar 04 11:14:39 | 73.9932 | 0.00360 | 22.6394 | 4.8181 | 184.8290 | 12.52384 | – |
| 2026 Mar 05 18:56 | 2026 Mar 04 11:14:39 | 73.9932 | 0.00360 | 22.6394 | 4.8181 | 184.8290 | 12.52384 | – |
| 2026 Mar 04 18:57 | 2026 Mar 04 11:14:39 | 73.9932 | 0.00360 | 22.6394 | 4.8181 | 184.8290 | 12.52384 | – |
| 2026 Mar 03 18:56 | 2026 Feb 26 13:41:22 | 73.9933 | 0.00359 | 23.1655 | 13.6825 | 184.8290 | 12.52384 | – |
| 2026 Mar 02 18:57 | 2026 Feb 26 13:41:22 | 73.9933 | 0.00359 | 23.1655 | 13.6825 | 184.8290 | 12.52384 | – |
| 2026 Mar 01 18:57 | 2026 Feb 26 13:41:22 | 73.9933 | 0.00359 | 23.1655 | 13.6825 | 184.8290 | 12.52384 | – |
| 2026 Feb 28 18:56 | 2026 Feb 26 13:41:22 | 73.9933 | 0.00359 | 23.1655 | 13.6825 | 184.8290 | 12.52384 | – |
| 2026 Feb 27 19:05 | 2026 Feb 26 13:41:22 | 73.9933 | 0.00359 | 23.1655 | 13.6825 | 184.8290 | 12.52384 | – |
| 2026 Feb 26 20:45 | 2026 Feb 26 13:41:22 | 73.9933 | 0.00359 | 23.1655 | 13.6825 | 184.8290 | 12.52384 | – |