| Primary satellite | Secondary satellite |
| Name | NOAA 16 DEB | Cosmos 858 Rocket |
| Spacetrack catalog number | 41652 | 9444 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 00:45 | 2024 Dec 23 03:47 |
| Time of closest approach (UTC) | 2024 Dec 29 14:56:32.576 |
| Minimum distance | 4.365 km |
| Height difference | -2.048 km |
| Relative speed | 14.925 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 3.9°S, 51.8°W |
| Height | 768 km |
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