| Primary satellite | Secondary satellite |
| Name | XW-2F | SWARM B |
| Spacetrack catalog number | 40910 | 39451 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2021 Mar 07 20:44 | 2021 Mar 07 11:43 |
| Time of closest approach (UTC) | 2021 Jan 18 22:15:28.494 |
| Minimum distance | 30.119 km |
| Height difference | -1.267 km |
| Relative speed | 15.140 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 59.4°S, 53.8°W |
| Height | 523 km |
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