| Primary satellite | Secondary satellite |
| Name | XW-2B | Cosmos 1300 |
| Spacetrack catalog number | 40911 | 12785 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2021 Mar 08 19:57 | 2021 Mar 08 10:52 |
| Time of closest approach (UTC) | 2021 Jan 23 15:43:52.769 |
| Minimum distance | 3.586 km |
| Height difference | 1.054 km |
| Relative speed | 15.185 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 82.5°S, 127.8°E |
| Height | 538 km |
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