| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DELTA 1 DEB |
| Spacetrack catalog number | 35459 | 37643 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 16:06 | 2024 Dec 19 21:11 |
| Time of closest approach (UTC) | 2024 Dec 23 17:15:15.503 |
| Minimum distance | 3.304 km |
| Height difference | -0.360 km |
| Relative speed | 12.038 km/s |
| Angle between velocity vectors | 108° |
| Geographic position | 73.4°S, 58.3°E |
| Height | 804 km |
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