| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | VELOX 1 |
| Spacetrack catalog number | 38212 | 40057 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 20 14:24 | 2024 Dec 23 08:32 |
| Time of closest approach (UTC) | 2024 Dec 24 18:28:01.130 |
| Minimum distance | 2.037 km |
| Height difference | 1.922 km |
| Relative speed | 15.105 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 19.0°N, 149.2°W |
| Height | 602 km |
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