| Primary satellite | Secondary satellite |
| Name | USA 229 | Cosmos 409 Rocket |
| Spacetrack catalog number | 37386 | 5181 |
| Radar cross section | | large |
| Epoch of two-line elements (UTC) | 2024 Dec 19 17:29 | 2024 Dec 23 03:04 |
| Time of closest approach (UTC) | 2024 Dec 26 20:03:32.173 |
| Minimum distance | 0.240 km |
| Height difference | 0.193 km |
| Relative speed | 10.873 km/s |
| Angle between velocity vectors | 98° |
| Geographic position | 56.1°N, 51.3°W |
| Height | 1208 km |
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