| Primary satellite | Secondary satellite |
| Name | AIST 2D | SKYSAT C4 |
| Spacetrack catalog number | 41465 | 41771 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Feb 25 11:34 | 2021 Feb 25 11:49 |
| Time of closest approach (UTC) | 2021 Jan 23 23:21:57.572 |
| Minimum distance | 5.733 km |
| Height difference | 2.663 km |
| Relative speed | 15.162 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 11.7°N, 19.6°W |
| Height | 453 km |
|