| Primary satellite | Secondary satellite |
| Name | Cosmos 2237 Rocket | deb Delta 139 |
| Spacetrack catalog number | 22566 | 12263 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 08 12:15 | 2021 Mar 08 21:19 |
| Time of closest approach (UTC) | 2021 Jan 20 10:20:22.402 |
| Minimum distance | 2.042 km |
| Height difference | -1.332 km |
| Relative speed | 14.969 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 8.8°N, 81.8°W |
| Height | 840 km |
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