| 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 06 19:06 | 2021 Mar 06 18:11 |
| Time of closest approach (UTC) | 2021 Jan 23 09:23:45.338 |
| Minimum distance | 2.432 km |
| Height difference | 0.868 km |
| Relative speed | 15.183 km/s |
| Angle between velocity vectors | 177° |
| Geographic position | 82.6°S, 145.9°W |
| Height | 538 km |
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