Orbital elements of COSMOS 684
| Launched | 18 September 1974 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 7442 |
| 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 Jun 13 17:56 | 2026 Jun 12 02:03:39 | 74.0361 | 0.00328 | 4.6694 | 189.9878 | 277.8838 | 12.55723 | – |
| 2026 Jun 12 17:56 | 2026 Jun 12 02:03:39 | 74.0361 | 0.00328 | 4.6694 | 189.9878 | 277.8838 | 12.55723 | – |
| 2026 Jun 11 17:57 | 2026 Jun 07 01:05:48 | 74.0358 | 0.00328 | 5.1206 | 197.5967 | 277.8838 | 12.55723 | – |
| 2026 Jun 10 17:56 | 2026 Jun 07 01:05:48 | 74.0358 | 0.00328 | 5.1206 | 197.5967 | 277.8838 | 12.55723 | – |
| 2026 Jun 09 17:57 | 2026 Jun 07 01:05:48 | 74.0358 | 0.00328 | 5.1206 | 197.5967 | 277.8838 | 12.55723 | – |
| 2026 Jun 08 17:56 | 2026 Jun 07 01:05:48 | 74.0358 | 0.00328 | 5.1206 | 197.5967 | 277.8838 | 12.55723 | – |
| 2026 Jun 07 17:56 | 2026 Jun 07 01:05:48 | 74.0358 | 0.00328 | 5.1206 | 197.5967 | 277.8838 | 12.55723 | – |
| 2026 Jun 06 17:56 | 2026 May 31 07:08:22 | 74.0353 | 0.00330 | 5.7246 | 207.8408 | 277.8838 | 12.55723 | – |
| 2026 Jun 05 17:56 | 2026 May 31 07:08:22 | 74.0353 | 0.00330 | 5.7246 | 207.8408 | 277.8838 | 12.55723 | – |
| 2026 Jun 04 17:57 | 2026 May 31 07:08:22 | 74.0353 | 0.00330 | 5.7246 | 207.8408 | 277.8838 | 12.55723 | – |
| 2026 Jun 02 17:56 | 2026 May 31 07:08:22 | 74.0353 | 0.00330 | 5.7246 | 207.8408 | 277.8838 | 12.55723 | – |
| 2026 Jun 01 17:57 | 2026 May 31 07:08:22 | 74.0353 | 0.00330 | 5.7246 | 207.8408 | 277.8838 | 12.55723 | – |
| 2026 May 31 17:58 | 2026 May 31 07:08:22 | 74.0353 | 0.00330 | 5.7246 | 207.8408 | 277.8838 | 12.55723 | – |
| 2026 May 30 17:57 | 2026 May 26 06:39:25 | 74.0346 | 0.00330 | 6.1739 | 215.4500 | 277.8838 | 12.55723 | – |
| 2026 May 29 17:57 | 2026 May 26 06:39:25 | 74.0346 | 0.00330 | 6.1739 | 215.4500 | 277.8838 | 12.55723 | – |
| 2026 May 28 17:56 | 2026 May 26 06:39:25 | 74.0346 | 0.00330 | 6.1739 | 215.4500 | 277.8838 | 12.55723 | – |
| 2026 May 27 17:57 | 2026 May 26 06:39:25 | 74.0346 | 0.00330 | 6.1739 | 215.4500 | 277.8838 | 12.55723 | – |
| 2026 May 26 17:57 | 2026 May 26 06:39:25 | 74.0346 | 0.00330 | 6.1739 | 215.4500 | 277.8838 | 12.55723 | – |
| 2026 May 25 17:57 | 2026 May 21 06:13:38 | 74.0336 | 0.00331 | 6.6231 | 223.0008 | 277.8838 | 12.55723 | – |
| 2026 May 24 17:57 | 2026 May 21 06:13:38 | 74.0336 | 0.00331 | 6.6231 | 223.0008 | 277.8838 | 12.55723 | – |
| 2026 May 23 17:58 | 2026 May 21 06:13:38 | 74.0336 | 0.00331 | 6.6231 | 223.0008 | 277.8838 | 12.55723 | – |
| 2026 May 22 17:57 | 2026 May 21 06:13:38 | 74.0336 | 0.00331 | 6.6231 | 223.0008 | 277.8838 | 12.55723 | – |
| 2026 May 21 17:57 | 2026 May 21 06:13:38 | 74.0336 | 0.00331 | 6.6231 | 223.0008 | 277.8838 | 12.55723 | – |
| 2026 May 20 17:57 | 2026 May 16 15:39:45 | 74.0331 | 0.00332 | 7.0355 | 229.9164 | 277.8838 | 12.55723 | – |
| 2026 May 19 17:58 | 2026 May 16 15:39:45 | 74.0331 | 0.00332 | 7.0355 | 229.9164 | 277.8838 | 12.55723 | – |
| 2026 May 18 17:57 | 2026 May 16 15:39:45 | 74.0331 | 0.00332 | 7.0355 | 229.9164 | 277.8838 | 12.55723 | – |
| 2026 May 17 17:57 | 2026 May 16 15:39:45 | 74.0331 | 0.00332 | 7.0355 | 229.9164 | 277.8838 | 12.55723 | – |