| Primary satellite | Secondary satellite |
| Name | XW-2D | FLOCK 4V 20 |
| Spacetrack catalog number | 40907 | 46612 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 20:04 | 2021 Mar 07 11:21 |
| Time of closest approach (UTC) | 2021 Jan 19 04:56:45.951 |
| Minimum distance | 43.490 km |
| Height difference | -2.877 km |
| Relative speed | 8.927 km/s |
| Angle between velocity vectors | 72° |
| Geographic position | 80.7°N, 137.5°E |
| Height | 533 km |
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