| Primary satellite | Secondary satellite |
| Name | CAS-6 | COSMOS 2251 DEB |
| Spacetrack catalog number | 44881 | 47059 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:51 | 2024 Dec 18 23:17 |
| Time of closest approach (UTC) | 2024 Dec 23 14:21:35.394 |
| Minimum distance | 2.848 km |
| Height difference | 2.777 km |
| Relative speed | 14.852 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 62.1°S, 138.6°E |
| Height | 644 km |
|