| 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 14:00:13.971 |
| Minimum distance | 497.333 km |
| Height difference | -0.512 km |
| Relative speed | 4.971 km/s |
| Angle between velocity vectors | 39° |
| Geographic position | 48.7°S, 58.8°W |
| Height | 669 km |
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