| Primary satellite | Secondary satellite |
| Name | ESTCUBE 1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 39161 | 34735 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2022 Aug 07 10:31 | 2022 Aug 05 17:25 |
| Time of closest approach (UTC) | 2022 Jun 29 08:50:51.664 |
| Minimum distance | 211.584 km |
| Height difference | 2.702 km |
| Relative speed | 14.861 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 53.8°S, 141.9°W |
| Height | 671 km |
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