| Primary satellite | Secondary satellite |
| Name | USA 81 | Cosmos 972 Rocket |
| Spacetrack catalog number | 21949 | 10541 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:14 | 2024 Dec 22 20:24 |
| Time of closest approach (UTC) | 2024 Dec 28 00:11:29.026 |
| Minimum distance | 3.079 km |
| Height difference | -2.893 km |
| Relative speed | 14.661 km/s |
| Angle between velocity vectors | 156° |
| Geographic position | 36.2°S, 80.1°W |
| Height | 798 km |
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