| Primary satellite | Secondary satellite |
| Name | Cosmos 2251 Rocket | NOAA 16 DEB |
| Spacetrack catalog number | 22676 | 42409 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 12:10 | 2021 Jan 17 12:19 |
| Time of closest approach (UTC) | 2020 Nov 25 12:42:44.481 |
| Minimum distance | 217.144 km |
| Height difference | -5.043 km |
| Relative speed | 3.847 km/s |
| Angle between velocity vectors | 30° |
| Geographic position | 34.7°S, 22.2°W |
| Height | 793 km |
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