| Primary satellite | Secondary satellite |
| Name | Cosmos 1400 Rocket | XW-2C |
| Spacetrack catalog number | 13403 | 40906 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 05 21:37 | 2021 Mar 05 18:40 |
| Time of closest approach (UTC) | 2021 Jan 18 13:15:45.878 |
| Minimum distance | 5.277 km |
| Height difference | -4.502 km |
| Relative speed | 15.181 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 68.2°S, 133.4°W |
| Height | 547 km |
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