| Primary satellite | Secondary satellite |
| Name | Cosmos 2228 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 22287 | 47056 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 13 01:29 | 2021 Apr 13 04:29 |
| Time of closest approach (UTC) | 2021 Mar 03 15:14:36.468 |
| Minimum distance | 192.071 km |
| Height difference | -2.329 km |
| Relative speed | 9.886 km/s |
| Angle between velocity vectors | 82° |
| Geographic position | 74.1°S, 161.8°W |
| Height | 656 km |
|