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 Jan 28 18:56 | 2026 Jan 23 04:21:15 | 67.6566 | 0.51532 | 6.0065 | 98.7358 | 320.4285 | 2.00821 | – |
| 2026 Jan 27 18:56 | 2026 Jan 18 04:50:27 | 67.6530 | 0.51515 | 6.0232 | 98.8494 | 320.4285 | 2.00821 | – |
| 2026 Jan 26 18:57 | 2026 Jan 18 04:50:27 | 67.6530 | 0.51515 | 6.0232 | 98.8494 | 320.4285 | 2.00821 | – |
| 2026 Jan 25 18:57 | 2026 Jan 18 04:50:27 | 67.6530 | 0.51515 | 6.0232 | 98.8494 | 320.4285 | 2.00821 | – |
| 2026 Jan 24 18:58 | 2026 Jan 18 04:50:27 | 67.6530 | 0.51515 | 6.0232 | 98.8494 | 320.4285 | 2.00821 | – |
| 2026 Jan 22 18:56 | 2026 Jan 18 04:50:27 | 67.6530 | 0.51515 | 6.0232 | 98.8494 | 320.4285 | 2.00821 | – |
| 2026 Jan 21 18:56 | 2026 Jan 14 17:10:49 | 67.6506 | 0.51504 | 6.0348 | 98.9287 | 320.4285 | 2.00821 | – |
| 2026 Jan 20 19:06 | 2026 Jan 14 17:10:49 | 67.6506 | 0.51504 | 6.0348 | 98.9287 | 320.4285 | 2.00821 | – |
| 2026 Jan 19 18:57 | 2026 Jan 14 17:10:49 | 67.6506 | 0.51504 | 6.0348 | 98.9287 | 320.4285 | 2.00821 | – |
| 2026 Jan 18 18:57 | 2026 Jan 14 17:10:49 | 67.6506 | 0.51504 | 6.0348 | 98.9287 | 320.4285 | 2.00821 | – |
| 2026 Jan 17 18:56 | 2026 Jan 14 17:10:49 | 67.6506 | 0.51504 | 6.0348 | 98.9287 | 320.4285 | 2.00821 | – |
| 2026 Jan 16 18:57 | 2026 Jan 14 17:10:49 | 67.6506 | 0.51504 | 6.0348 | 98.9287 | 320.4285 | 2.00821 | – |
| 2026 Jan 15 18:56 | 2026 Jan 10 05:37:00 | 67.6476 | 0.51490 | 6.0498 | 99.0305 | 320.4285 | 2.00821 | – |
| 2026 Jan 13 18:56 | 2026 Jan 10 05:37:00 | 67.6476 | 0.51490 | 6.0498 | 99.0305 | 320.4285 | 2.00821 | – |
| 2026 Jan 11 18:57 | 2026 Jan 10 05:37:00 | 67.6476 | 0.51490 | 6.0498 | 99.0305 | 320.4285 | 2.00821 | – |
| 2026 Jan 10 18:57 | 2026 Jan 03 18:14:33 | 67.6421 | 0.51467 | 6.0715 | 99.1780 | 320.4285 | 2.00821 | – |
| 2026 Jan 09 18:57 | 2026 Jan 03 18:14:33 | 67.6421 | 0.51467 | 6.0715 | 99.1780 | 320.4285 | 2.00821 | – |
| 2026 Jan 08 18:56 | 2026 Jan 03 18:14:33 | 67.6421 | 0.51467 | 6.0715 | 99.1780 | 320.4285 | 2.00821 | – |
| 2026 Jan 07 18:57 | 2026 Jan 03 18:14:33 | 67.6421 | 0.51467 | 6.0715 | 99.1780 | 320.4285 | 2.00821 | – |
| 2026 Jan 06 18:56 | 2026 Jan 03 18:14:33 | 67.6421 | 0.51467 | 6.0715 | 99.1780 | 320.4285 | 2.00821 | – |
| 2026 Jan 05 18:57 | 2025 Dec 30 18:37:31 | 67.6391 | 0.51453 | 6.0848 | 99.2687 | 320.4285 | 2.00821 | – |
| 2026 Jan 04 18:56 | 2025 Dec 30 18:37:31 | 67.6391 | 0.51453 | 6.0848 | 99.2687 | 320.4285 | 2.00821 | – |
| 2026 Jan 03 18:57 | 2025 Dec 30 18:37:31 | 67.6391 | 0.51453 | 6.0848 | 99.2687 | 320.4285 | 2.00821 | – |
| 2026 Jan 01 18:56 | 2025 Dec 30 18:37:31 | 67.6391 | 0.51453 | 6.0848 | 99.2687 | 320.4285 | 2.00821 | – |