| Primary satellite | Secondary satellite |
| Name | USA 229 DEB | deb Kosmos-1375 |
| Spacetrack catalog number | 37391 | 16383 |
| Radar cross section | | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 11 19:06 | 2021 Apr 12 12:27 |
| Time of closest approach (UTC) | 2021 Mar 09 21:52:29.400 |
| Minimum distance | 12.001 km |
| Height difference | -0.393 km |
| Relative speed | 12.996 km/s |
| Angle between velocity vectors | 123° |
| Geographic position | 26.4°N, 28.5°E |
| Height | 983 km |
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