Orbital elements of COSMOS 1684
| Launched | 23 September 1985 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 16064 |
| 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 May 29 17:57 | 2026 May 21 05:00:30 | 67.7106 | 0.51973 | 5.6095 | 96.0445 | 322.7061 | 2.00747 | – |
| 2026 May 28 17:56 | 2026 May 21 05:00:30 | 67.7106 | 0.51973 | 5.6095 | 96.0445 | 322.7061 | 2.00747 | – |
| 2026 May 27 17:57 | 2026 May 21 05:00:30 | 67.7106 | 0.51973 | 5.6095 | 96.0445 | 322.7061 | 2.00747 | – |
| 2026 May 26 17:57 | 2026 May 21 05:00:30 | 67.7106 | 0.51973 | 5.6095 | 96.0445 | 322.7061 | 2.00747 | – |
| 2026 May 25 17:57 | 2026 May 18 05:16:31 | 67.7098 | 0.51959 | 5.6196 | 96.1104 | 322.7061 | 2.00747 | – |
| 2026 May 24 17:57 | 2026 May 18 05:16:31 | 67.7098 | 0.51959 | 5.6196 | 96.1104 | 322.7061 | 2.00747 | – |
| 2026 May 23 17:58 | 2026 May 18 05:16:31 | 67.7098 | 0.51959 | 5.6196 | 96.1104 | 322.7061 | 2.00747 | – |
| 2026 May 22 17:57 | 2026 May 18 05:16:31 | 67.7098 | 0.51959 | 5.6196 | 96.1104 | 322.7061 | 2.00747 | – |
| 2026 May 21 17:57 | 2026 May 18 05:16:31 | 67.7098 | 0.51959 | 5.6196 | 96.1104 | 322.7061 | 2.00747 | – |
| 2026 May 20 17:57 | 2026 May 11 05:54:24 | 67.7084 | 0.51929 | 5.6431 | 96.2660 | 322.7061 | 2.00747 | – |
| 2026 May 19 17:58 | 2026 May 11 05:54:24 | 67.7084 | 0.51929 | 5.6431 | 96.2660 | 322.7061 | 2.00747 | – |
| 2026 May 18 17:57 | 2026 May 11 05:54:24 | 67.7084 | 0.51929 | 5.6431 | 96.2660 | 322.7061 | 2.00747 | – |
| 2026 May 17 17:57 | 2026 May 11 05:54:24 | 67.7084 | 0.51929 | 5.6431 | 96.2660 | 322.7061 | 2.00747 | – |
| 2026 May 16 17:56 | 2026 May 11 05:54:24 | 67.7084 | 0.51929 | 5.6431 | 96.2660 | 322.7061 | 2.00747 | – |
| 2026 May 14 17:58 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 13 17:58 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 12 17:58 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 11 17:56 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 10 17:57 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 09 17:57 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 08 17:57 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 07 17:58 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 06 17:57 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 05 17:57 | 2026 May 02 18:40:52 | 67.7063 | 0.51892 | 5.6717 | 96.4561 | 322.7061 | 2.00747 | – |
| 2026 May 04 17:57 | 2026 Apr 26 07:16:59 | 67.7045 | 0.51866 | 5.6935 | 96.6009 | 322.7061 | 2.00747 | – |
| 2026 May 03 17:57 | 2026 Apr 26 07:16:59 | 67.7045 | 0.51866 | 5.6935 | 96.6009 | 322.7061 | 2.00747 | – |
| 2026 May 02 17:57 | 2026 Apr 26 07:16:59 | 67.7045 | 0.51866 | 5.6935 | 96.6009 | 322.7061 | 2.00747 | – |