| Primary satellite | Secondary satellite |
| Name | Cosmos 2228 | SEEDS |
| Spacetrack catalog number | 22286 | 32791 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 08 18:06 | 2021 Mar 08 10:51 |
| Time of closest approach (UTC) | 2021 Jan 18 05:14:22.958 |
| Minimum distance | 22.885 km |
| Height difference | -3.588 km |
| Relative speed | 14.698 km/s |
| Angle between velocity vectors | 152° |
| Geographic position | 82.2°N, 92.6°E |
| Height | 603 km |
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