| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Delta 139 |
| Spacetrack catalog number | 34910 | 12216 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:21 | 2024 Dec 23 00:42 |
| Time of closest approach (UTC) | 2024 Dec 27 19:36:28.767 |
| Minimum distance | 4.854 km |
| Height difference | -2.600 km |
| Relative speed | 14.598 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 10.7°S, 85.5°E |
| Height | 1043 km |
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