| Primary satellite | Secondary satellite |
| Name | ESTCUBE 1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 39161 | 37088 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2022 Aug 07 10:31 | 2022 Aug 06 21:40 |
| Time of closest approach (UTC) | 2022 Jun 27 19:07:27.347 |
| Minimum distance | 117.598 km |
| Height difference | 0.832 km |
| Relative speed | 14.150 km/s |
| Angle between velocity vectors | 141° |
| Geographic position | 73.9°S, 155.5°W |
| Height | 682 km |
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