| Primary satellite | Secondary satellite |
| Name | USA-17 | ERS 1 DEB |
| Spacetrack catalog number | 16625 | 35262 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 12 10:27 | 2021 Apr 12 11:39 |
| Time of closest approach (UTC) | 2021 Mar 05 21:45:34.555 |
| Minimum distance | 10.960 km |
| Height difference | -3.073 km |
| Relative speed | 14.856 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 30.9°N, 98.3°W |
| Height | 739 km |
|