| Primary satellite | Secondary satellite |
| Name | NOAA 16 DEB | Cosmos 921 |
| Spacetrack catalog number | 42373 | 10095 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 20 14:02 | 2024 Dec 23 05:22 |
| Time of closest approach (UTC) | 2024 Dec 23 13:44:52.680 |
| Minimum distance | 2.076 km |
| Height difference | -1.312 km |
| Relative speed | 14.892 km/s |
| Angle between velocity vectors | 160° |
| Geographic position | 70.8°N, 172.8°W |
| Height | 614 km |
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