| 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 08 10:58 | 2022 Aug 08 00:30 |
| Time of closest approach (UTC) | 2022 Jun 29 08:48:01.667 |
| Minimum distance | 163.746 km |
| Height difference | 6.612 km |
| Relative speed | 14.851 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 63.8°S, 135.8°W |
| Height | 676 km |
|