| Primary satellite | Secondary satellite |
| Name | AEROCUBE 2 | COSMOS 2251 DEB |
| Spacetrack catalog number | 31133 | 33839 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 09:05 | 2024 Dec 23 12:14 |
| Time of closest approach (UTC) | 2024 Dec 28 23:48:31.593 |
| Minimum distance | 3.966 km |
| Height difference | -0.149 km |
| Relative speed | 14.858 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 51.2°N, 140.0°W |
| Height | 730 km |
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