| Primary satellite | Secondary satellite |
| Name | ESTCUBE 1 | deb r/b Ablestar |
| Spacetrack catalog number | 39161 | 318 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Feb 26 00:55 | 2021 Feb 25 13:00 |
| Time of closest approach (UTC) | 2021 Jan 19 04:10:11.499 |
| Minimum distance | 103.093 km |
| Height difference | 4.945 km |
| Relative speed | 11.615 km/s |
| Angle between velocity vectors | 101° |
| Geographic position | 67.0°S, 58.5°W |
| Height | 672 km |
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