| Primary satellite | Secondary satellite |
| Name | ESTCUBE 1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 39161 | 37123 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2022 Jun 28 18:24 | 2022 Jun 23 06:53 |
| Time of closest approach (UTC) | 2022 May 22 20:31:50.200 |
| Minimum distance | 403.862 km |
| Height difference | -0.970 km |
| Relative speed | 5.037 km/s |
| Angle between velocity vectors | 39° |
| Geographic position | 49.8°S, 157.1°W |
| Height | 670 km |
|