| Primary satellite | Secondary satellite |
| Name | PAYLOAD A | USA 81 |
| Spacetrack catalog number | 27430 | 21949 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:18 | 2024 Dec 23 02:58 |
| Time of closest approach (UTC) | 2024 Dec 26 21:59:50.856 |
| Minimum distance | 2.780 km |
| Height difference | -2.270 km |
| Relative speed | 8.959 km/s |
| Angle between velocity vectors | 74° |
| Geographic position | 78.4°N, 113.0°E |
| Height | 799 km |
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