| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | ESTCUBE 1 |
| Spacetrack catalog number | 34115 | 39161 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:46 | 2024 Dec 23 04:09 |
| Time of closest approach (UTC) | 2024 Dec 25 15:07:48.216 |
| Minimum distance | 1.841 km |
| Height difference | -1.834 km |
| Relative speed | 14.584 km/s |
| Angle between velocity vectors | 150° |
| Geographic position | 69.8°N, 58.5°W |
| Height | 652 km |
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