| Primary satellite | Secondary satellite |
| Name | COSMOS 1867 COOLANT | COSMOS 2251 DEB |
| Spacetrack catalog number | 39664 | 35012 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 06:38 | 2024 Dec 22 13:32 |
| Time of closest approach (UTC) | 2024 Dec 29 20:31:54.051 |
| Minimum distance | 4.591 km |
| Height difference | 0.878 km |
| Relative speed | 3.963 km/s |
| Angle between velocity vectors | 31° |
| Geographic position | 63.0°N, 140.0°E |
| Height | 804 km |
|