| Primary satellite | Secondary satellite |
| Name | OBJECT E | COSMOS 2251 DEB |
| Spacetrack catalog number | 49319 | 34958 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 05:30 | 2024 Dec 21 01:20 |
| Time of closest approach (UTC) | 2024 Dec 26 05:04:30.817 |
| Minimum distance | 3.751 km |
| Height difference | 3.329 km |
| Relative speed | 15.093 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 57.1°S, 36.0°E |
| Height | 481 km |
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