| Primary satellite | Secondary satellite |
| Name | CAS-6 | Cosmos 2228 Rocket |
| Spacetrack catalog number | 44881 | 22287 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2021 Feb 28 01:08 | 2021 Feb 27 18:58 |
| Time of closest approach (UTC) | 2021 Jan 22 08:30:48.933 |
| Minimum distance | 1.988 km |
| Height difference | -0.767 km |
| Relative speed | 14.989 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 81.9°S, 70.2°W |
| Height | 660 km |
|