| Primary satellite | Secondary satellite |
| Name | USA 229 DEB | Cosmos 842 Rocket |
| Spacetrack catalog number | 37391 | 9044 |
| Radar cross section | | large |
| Epoch of two-line elements (UTC) | 2021 Apr 11 19:06 | 2021 Apr 12 21:54 |
| Time of closest approach (UTC) | 2021 Mar 07 07:12:01.250 |
| Minimum distance | 7.177 km |
| Height difference | 0.410 km |
| Relative speed | 14.063 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 21.6°N, 105.1°W |
| Height | 976 km |
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