| Primary satellite | Secondary satellite |
| Name | ESTCUBE 1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 39161 | 34854 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2022 Aug 08 10:58 | 2022 Aug 08 16:20 |
| Time of closest approach (UTC) | 2022 Jul 09 01:05:47.023 |
| Minimum distance | 14.477 km |
| Height difference | -1.785 km |
| Relative speed | 14.691 km/s |
| Angle between velocity vectors | 154° |
| Geographic position | 68.5°N, 163.9°E |
| Height | 666 km |
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