| Primary satellite | Secondary satellite |
| Name | M-CUBED/EXP-1 PRIME | OBJECT A |
| Spacetrack catalog number | 37855 | 44041 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 05 21:11 | 2021 Mar 06 10:42 |
| Time of closest approach (UTC) | 2021 Jan 22 21:24:37.905 |
| Minimum distance | 132.566 km |
| Height difference | 2.357 km |
| Relative speed | 14.934 km/s |
| Angle between velocity vectors | 153° |
| Geographic position | 6.8°N, 31.4°W |
| Height | 445 km |
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