| Primary satellite | Secondary satellite |
| Name | DMSP-16 (USA 172) | deb Delta 139 |
| Spacetrack catalog number | 28054 | 12170 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 08:34 | 2024 Dec 23 00:10 |
| Time of closest approach (UTC) | 2024 Dec 27 11:47:02.058 |
| Minimum distance | 4.235 km |
| Height difference | 3.952 km |
| Relative speed | 1.593 km/s |
| Angle between velocity vectors | 12° |
| Geographic position | 81.0°S, 169.2°W |
| Height | 870 km |
|