| Primary satellite | Secondary satellite |
| Name | USA 281 | DELTA 1 DEB |
| Spacetrack catalog number | 43145 | 42635 |
| Radar cross section | | small |
| Epoch of two-line elements (UTC) | 2026 Jan 05 16:27 | 2026 Jan 14 14:32 |
| Time of closest approach (UTC) | 2025 Dec 17 18:04:29.773 |
| Minimum distance | 11.089 km |
| Height difference | -3.293 km |
| Relative speed | 13.856 km/s |
| Angle between velocity vectors | 143° |
| Geographic position | 44.6°S, 74.8°E |
| Height | 1097 km |
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