| Primary satellite | Secondary satellite |
| Name | Gbstr 26 Del rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 25876 | 34756 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 14 22:12 | 2021 Jan 15 09:12 |
| Time of closest approach (UTC) | 2020 Dec 09 00:09:02.290 |
| Minimum distance | 51.932 km |
| Height difference | 1.416 km |
| Relative speed | 12.106 km/s |
| Angle between velocity vectors | 107° |
| Geographic position | 39.2°N, 59.5°W |
| Height | 795 km |
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