| Primary satellite | Secondary satellite |
| Name | Cosmos 2263 Rocket | Star 20 E-55 |
| Spacetrack catalog number | 22803 | 22699 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Mar 06 06:17 | 2021 Mar 05 19:53 |
| Time of closest approach (UTC) | 2021 Jan 29 23:59:30.637 |
| Minimum distance | 9.003 km |
| Height difference | -0.844 km |
| Relative speed | 14.649 km/s |
| Angle between velocity vectors | 160° |
| Geographic position | 11.9°S, 36.6°E |
| Height | 830 km |
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