| Primary satellite | Secondary satellite |
| Name | Cosmos 2263 Rocket | deb REX |
| Spacetrack catalog number | 22803 | 21532 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 20 05:15 | 2021 Jan 19 17:13 |
| Time of closest approach (UTC) | 2020 Dec 04 00:48:41.001 |
| Minimum distance | 42.604 km |
| Height difference | -1.102 km |
| Relative speed | 14.150 km/s |
| Angle between velocity vectors | 145° |
| Geographic position | 54.4°S, 135.0°W |
| Height | 845 km |
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