| Primary satellite | Secondary satellite |
| Name | COSMOS 1818 DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 36938 | 34061 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 12:47 | 2024 Dec 22 16:51 |
| Time of closest approach (UTC) | 2024 Dec 26 03:36:31.887 |
| Minimum distance | 3.449 km |
| Height difference | 2.311 km |
| Relative speed | 8.806 km/s |
| Angle between velocity vectors | 72° |
| Geographic position | 63.4°S, 8.9°E |
| Height | 777 km |
|