| Primary satellite | Secondary satellite |
| Name | Landsat 7 | COSMOS 2251 DEB |
| Spacetrack catalog number | 25682 | 38055 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 02:40 | 2021 Jan 13 21:02 |
| Time of closest approach (UTC) | 2020 Dec 02 14:20:02.702 |
| Minimum distance | 80.961 km |
| Height difference | -2.809 km |
| Relative speed | 11.844 km/s |
| Angle between velocity vectors | 104° |
| Geographic position | 73.0°N, 44.3°W |
| Height | 715 km |
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