| Primary satellite | Secondary satellite |
| Name | SEEDS | Cosmos 2221 |
| Spacetrack catalog number | 32791 | 22236 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2022 May 17 20:57 | 2022 May 17 11:24 |
| Time of closest approach (UTC) | 2022 Jan 30 18:53:42.356 |
| Minimum distance | 3927.669 km |
| Height difference | 1.273 km |
| Relative speed | 12.986 km/s |
| Angle between velocity vectors | 119° |
| Geographic position | 65.5°N, 155.4°E |
| Height | 616 km |
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