| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | USA 427 |
| Spacetrack catalog number | 35703 | 61650 |
| Radar cross section | small | |
| Epoch of two-line elements (UTC) | 2024 Dec 20 19:48 | 2024 Dec 18 17:06 |
| Time of closest approach (UTC) | 2024 Dec 28 19:27:57.094 |
| Minimum distance | 4.988 km |
| Height difference | 2.078 km |
| Relative speed | 14.101 km/s |
| Angle between velocity vectors | 137° |
| Geographic position | 33.2°N, 156.9°E |
| Height | 582 km |
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