| Primary satellite | Secondary satellite |
| Name | Landsat 7 | COSMOS 2251 DEB |
| Spacetrack catalog number | 25682 | 35474 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 02:40 | 2021 Jan 14 18:07 |
| Time of closest approach (UTC) | 2020 Dec 02 16:24:13.072 |
| Minimum distance | 5.566 km |
| Height difference | 2.335 km |
| Relative speed | 14.960 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 17.2°S, 105.3°W |
| Height | 708 km |
|