| Primary satellite | Secondary satellite |
| Name | Cosmos 836 | COSMOS 2251 DEB |
| Spacetrack catalog number | 8923 | 34022 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 03:14 | 2024 Dec 23 00:37 |
| Time of closest approach (UTC) | 2024 Dec 24 07:15:42.744 |
| Minimum distance | 3.956 km |
| Height difference | -3.899 km |
| Relative speed | 4.956 km/s |
| Angle between velocity vectors | 39° |
| Geographic position | 73.2°S, 70.3°W |
| Height | 792 km |
|