| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | STARLINK-4398 |
| Spacetrack catalog number | 35970 | 53466 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 20 21:18 | 2024 Dec 23 18:45 |
| Time of closest approach (UTC) | 2024 Dec 24 12:13:23.795 |
| Minimum distance | 2.941 km |
| Height difference | 0.724 km |
| Relative speed | 8.847 km/s |
| Angle between velocity vectors | 71° |
| Geographic position | 69.0°N, 41.1°E |
| Height | 575 km |
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