Orbital elements of COSMOS 1638
| Launched | 20 March 1985 |
| Flight ended | – |
| Launch site | Plesetsk Missile and Space Complex, Russia |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 15620 |
| 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 |
| 2024 Apr 25 17:55 | 2024 Apr 21 20:03:40 | 74.0592 | 0.00160 | 23.8816 | 265.1166 | 165.0153 | 12.49195 | – |
| 2024 Apr 24 17:53 | 2024 Apr 21 20:03:40 | 74.0592 | 0.00160 | 23.8816 | 265.1166 | 165.0153 | 12.49195 | – |
| 2024 Apr 23 17:53 | 2024 Apr 21 20:03:40 | 74.0592 | 0.00160 | 23.8816 | 265.1166 | 165.0153 | 12.49195 | – |
| 2024 Apr 22 17:52 | 2024 Apr 21 20:03:40 | 74.0592 | 0.00160 | 23.8816 | 265.1166 | 165.0153 | 12.49195 | – |
| 2024 Apr 21 17:53 | 2024 Apr 15 21:52:24 | 74.0597 | 0.00161 | 0.4048 | 273.7796 | 165.0153 | 12.49195 | – |
| 2024 Apr 20 17:52 | 2024 Apr 15 21:52:24 | 74.0597 | 0.00161 | 0.4048 | 273.7796 | 165.0153 | 12.49195 | – |
| 2024 Apr 19 17:53 | 2024 Apr 15 21:52:24 | 74.0597 | 0.00161 | 0.4048 | 273.7796 | 165.0153 | 12.49195 | – |
| 2024 Apr 18 17:57 | 2024 Apr 15 21:52:24 | 74.0597 | 0.00161 | 0.4048 | 273.7796 | 165.0153 | 12.49195 | – |
| 2024 Apr 17 17:53 | 2024 Apr 15 21:52:24 | 74.0597 | 0.00161 | 0.4048 | 273.7796 | 165.0153 | 12.49195 | – |
| 2024 Apr 16 17:53 | 2024 Apr 15 21:52:24 | 74.0597 | 0.00161 | 0.4048 | 273.7796 | 165.0153 | 12.49195 | – |
| 2024 Apr 15 17:54 | 2024 Apr 09 17:37:58 | 74.0596 | 0.00161 | 0.9502 | 282.7167 | 165.0153 | 12.49195 | – |
| 2024 Apr 14 17:53 | 2024 Apr 09 17:37:58 | 74.0596 | 0.00161 | 0.9502 | 282.7167 | 165.0153 | 12.49195 | – |
| 2024 Apr 13 17:53 | 2024 Apr 09 17:37:58 | 74.0596 | 0.00161 | 0.9502 | 282.7167 | 165.0153 | 12.49195 | – |
| 2024 Apr 12 17:53 | 2024 Apr 09 17:37:58 | 74.0596 | 0.00161 | 0.9502 | 282.7167 | 165.0153 | 12.49195 | – |
| 2024 Apr 11 17:54 | 2024 Apr 09 17:37:58 | 74.0596 | 0.00161 | 0.9502 | 282.7167 | 165.0153 | 12.49195 | – |
| 2024 Apr 10 17:56 | 2024 Apr 09 17:37:58 | 74.0596 | 0.00161 | 0.9502 | 282.7167 | 165.0153 | 12.49195 | – |
| 2024 Apr 09 17:56 | 2024 Apr 04 22:32:26 | 74.0596 | 0.00161 | 1.3737 | 289.6405 | 165.0153 | 12.49195 | – |
| 2024 Apr 08 17:55 | 2024 Apr 04 22:32:26 | 74.0596 | 0.00161 | 1.3737 | 289.6405 | 165.0153 | 12.49195 | – |
| 2024 Apr 07 17:53 | 2024 Apr 04 22:32:26 | 74.0596 | 0.00161 | 1.3737 | 289.6405 | 165.0153 | 12.49195 | – |
| 2024 Apr 06 17:58 | 2024 Apr 04 22:32:26 | 74.0596 | 0.00161 | 1.3737 | 289.6405 | 165.0153 | 12.49195 | – |
| 2024 Apr 05 17:53 | 2024 Apr 04 22:32:26 | 74.0596 | 0.00161 | 1.3737 | 289.6405 | 165.0153 | 12.49195 | – |
| 2024 Apr 04 17:56 | 2024 Mar 31 05:21:13 | 74.0591 | 0.00161 | 1.7901 | 296.4317 | 165.0153 | 12.49195 | – |
| 2024 Apr 03 17:53 | 2024 Mar 31 05:21:13 | 74.0591 | 0.00161 | 1.7901 | 296.4317 | 165.0153 | 12.49195 | – |
| 2024 Apr 02 17:52 | 2024 Mar 31 05:21:13 | 74.0591 | 0.00161 | 1.7901 | 296.4317 | 165.0153 | 12.49195 | – |
| 2024 Apr 01 17:52 | 2024 Mar 31 05:21:13 | 74.0591 | 0.00161 | 1.7901 | 296.4317 | 165.0153 | 12.49195 | – |
| 2024 Mar 31 17:52 | 2024 Mar 31 05:21:13 | 74.0591 | 0.00161 | 1.7901 | 296.4317 | 165.0153 | 12.49195 | – |
| 2024 Mar 30 18:52 | 2024 Mar 24 23:13:38 | 74.0581 | 0.00160 | 2.3425 | 305.4042 | 165.0153 | 12.49195 | – |
| 2024 Mar 29 18:52 | 2024 Mar 24 23:13:38 | 74.0581 | 0.00160 | 2.3425 | 305.4042 | 165.0153 | 12.49195 | – |