| Primary satellite | Secondary satellite |
| Name | USA 81 | DMSP 10533 |
| Spacetrack catalog number | 21949 | 7816 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:14 | 2024 Dec 22 20:50 |
| Time of closest approach (UTC) | 2024 Dec 25 14:32:18.175 |
| Minimum distance | 3.062 km |
| Height difference | -2.728 km |
| Relative speed | 14.924 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 6.9°S, 107.3°W |
| Height | 790 km |
|