| Primary satellite | Secondary satellite |
| Name | XW-2D | CZ-4B R/B |
| Spacetrack catalog number | 40907 | 38039 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2021 Mar 07 20:04 | 2021 Mar 07 11:39 |
| Time of closest approach (UTC) | 2021 Jan 20 19:01:09.886 |
| Minimum distance | 2.793 km |
| Height difference | -1.756 km |
| Relative speed | 0.777 km/s |
| Angle between velocity vectors | 6° |
| Geographic position | 77.0°N, 166.3°W |
| Height | 536 km |
|