| Primary satellite | Secondary satellite |
| Name | M-CUBED/EXP-1 PRIME | OBJECT M |
| Spacetrack catalog number | 37855 | 44890 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 05 21:11 | 2021 Mar 06 03:41 |
| Time of closest approach (UTC) | 2021 Jan 23 05:53:28.337 |
| Minimum distance | 113.899 km |
| Height difference | 1.117 km |
| Relative speed | 13.243 km/s |
| Angle between velocity vectors | 124° |
| Geographic position | 67.8°S, 50.5°E |
| Height | 668 km |
|