| Primary satellite | Secondary satellite |
| Name | Cosmos 2228 | DNEPR OBJECT AC |
| Spacetrack catalog number | 22286 | 39442 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Feb 26 01:32 | 2021 Feb 25 20:37 |
| Time of closest approach (UTC) | 2021 Jan 21 18:46:39.577 |
| Minimum distance | 5.514 km |
| Height difference | -0.284 km |
| Relative speed | 15.012 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 82.5°N, 92.8°W |
| Height | 603 km |
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