| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | SPARK 1 |
| Spacetrack catalog number | 33899 | 41900 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:32 | 2024 Dec 23 11:56 |
| Time of closest approach (UTC) | 2024 Dec 23 19:51:08.897 |
| Minimum distance | 2.997 km |
| Height difference | 2.144 km |
| Relative speed | 9.136 km/s |
| Angle between velocity vectors | 75° |
| Geographic position | 69.3°S, 39.7°W |
| Height | 726 km |
|