Orbital elements of COSMOS 1635
| Launched | 20 March 1985 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 15617 |
| 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 Feb 05 18:58 | 2026 Feb 02 11:29:20 | 74.0537 | 0.00245 | 4.9123 | 356.6021 | 115.9365 | 12.43256 | – |
| 2026 Feb 04 18:57 | 2026 Feb 02 11:29:20 | 74.0537 | 0.00245 | 4.9123 | 356.6021 | 115.9365 | 12.43256 | – |
| 2026 Feb 03 18:56 | 2026 Feb 02 11:29:20 | 74.0537 | 0.00245 | 4.9123 | 356.6021 | 115.9365 | 12.43256 | – |
| 2026 Feb 02 18:56 | 2026 Feb 02 11:29:20 | 74.0537 | 0.00245 | 4.9123 | 356.6021 | 115.9365 | 12.43256 | – |
| 2026 Feb 01 18:56 | 2026 Jan 27 20:20:17 | 74.0542 | 0.00244 | 5.4042 | 5.0017 | 115.9365 | 12.43256 | – |
| 2026 Jan 31 18:56 | 2026 Jan 27 20:20:17 | 74.0542 | 0.00244 | 5.4042 | 5.0017 | 115.9365 | 12.43256 | – |
| 2026 Jan 30 18:57 | 2026 Jan 27 20:20:17 | 74.0542 | 0.00244 | 5.4042 | 5.0017 | 115.9365 | 12.43256 | – |
| 2026 Jan 29 18:56 | 2026 Jan 27 20:20:17 | 74.0542 | 0.00244 | 5.4042 | 5.0017 | 115.9365 | 12.43256 | – |
| 2026 Jan 28 18:56 | 2026 Jan 27 20:20:17 | 74.0542 | 0.00244 | 5.4042 | 5.0017 | 115.9365 | 12.43256 | – |
| 2026 Jan 27 18:56 | 2026 Jan 22 10:23:24 | 74.0548 | 0.00243 | 5.8772 | 13.1542 | 115.9365 | 12.43256 | – |
| 2026 Jan 26 18:57 | 2026 Jan 22 10:23:24 | 74.0548 | 0.00243 | 5.8772 | 13.1542 | 115.9365 | 12.43256 | – |
| 2026 Jan 25 18:57 | 2026 Jan 22 10:23:24 | 74.0548 | 0.00243 | 5.8772 | 13.1542 | 115.9365 | 12.43256 | – |
| 2026 Jan 24 18:58 | 2026 Jan 22 10:23:24 | 74.0548 | 0.00243 | 5.8772 | 13.1542 | 115.9365 | 12.43256 | – |
| 2026 Jan 22 18:56 | 2026 Jan 22 10:23:24 | 74.0548 | 0.00243 | 5.8772 | 13.1542 | 115.9365 | 12.43256 | – |
| 2026 Jan 21 18:56 | 2026 Jan 16 13:43:10 | 74.0544 | 0.00242 | 6.3892 | 21.9995 | 115.9365 | 12.43256 | – |
| 2026 Jan 20 19:06 | 2026 Jan 16 13:43:10 | 74.0544 | 0.00242 | 6.3892 | 21.9995 | 115.9365 | 12.43256 | – |
| 2026 Jan 19 18:57 | 2026 Jan 16 13:43:10 | 74.0544 | 0.00242 | 6.3892 | 21.9995 | 115.9365 | 12.43256 | – |
| 2026 Jan 18 18:57 | 2026 Jan 16 13:43:10 | 74.0544 | 0.00242 | 6.3892 | 21.9995 | 115.9365 | 12.43256 | – |
| 2026 Jan 17 18:56 | 2026 Jan 16 13:43:10 | 74.0544 | 0.00242 | 6.3892 | 21.9995 | 115.9365 | 12.43256 | – |
| 2026 Jan 16 18:57 | 2026 Jan 16 13:43:10 | 74.0544 | 0.00242 | 6.3892 | 21.9995 | 115.9365 | 12.43256 | – |
| 2026 Jan 15 18:56 | 2026 Jan 11 15:56:54 | 74.0558 | 0.00241 | 6.8178 | 29.3970 | 115.9365 | 12.43256 | – |
| 2026 Jan 13 18:56 | 2026 Jan 11 15:56:54 | 74.0558 | 0.00241 | 6.8178 | 29.3970 | 115.9365 | 12.43256 | – |
| 2026 Jan 11 18:57 | 2026 Jan 11 15:56:54 | 74.0558 | 0.00241 | 6.8178 | 29.3970 | 115.9365 | 12.43256 | – |
| 2026 Jan 10 18:57 | 2026 Jan 06 06:20:20 | 74.0556 | 0.00240 | 7.2894 | 37.6242 | 115.9365 | 12.43256 | – |