| Primary satellite | Secondary satellite |
| Name | UKube-1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 40074 | 34629 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 12:48 | 2021 Mar 07 21:01 |
| Time of closest approach (UTC) | 2021 Jan 21 16:40:39.267 |
| Minimum distance | 87.282 km |
| Height difference | 5.703 km |
| Relative speed | 13.324 km/s |
| Angle between velocity vectors | 125° |
| Geographic position | 74.5°S, 110.3°W |
| Height | 645 km |
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