| Primary satellite | Secondary satellite |
| Name | Cosmos 1634 Rocket | deb Kosmos-2227 |
| Spacetrack catalog number | 15598 | 22408 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 14:28 | 2021 Jan 16 04:11 |
| Time of closest approach (UTC) | 2020 Dec 08 22:42:38.293 |
| Minimum distance | 15.373 km |
| Height difference | -3.078 km |
| Relative speed | 11.781 km/s |
| Angle between velocity vectors | 107° |
| Geographic position | 66.8°N, 13.0°W |
| Height | 976 km |
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