| Primary satellite | Secondary satellite |
| Name | Cosmos 2221 | QPS-SAR-8 AMATERU-IV |
| Spacetrack catalog number | 22236 | 60542 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:06 | 2024 Dec 23 04:05 |
| Time of closest approach (UTC) | 2024 Dec 23 19:42:48.159 |
| Minimum distance | 5.196 km |
| Height difference | 4.958 km |
| Relative speed | 10.948 km/s |
| Angle between velocity vectors | 93° |
| Geographic position | 79.5°S, 176.9°E |
| Height | 607 km |
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