| Primary satellite | Secondary satellite |
| Name | NOAA 6 | COSMOS 2251 DEB |
| Spacetrack catalog number | 11416 | 34750 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 14 12:56 | 2021 Apr 13 12:30 |
| Time of closest approach (UTC) | 2021 Mar 02 16:58:44.956 |
| Minimum distance | 9.684 km |
| Height difference | -0.812 km |
| Relative speed | 14.497 km/s |
| Angle between velocity vectors | 153° |
| Geographic position | 69.9°N, 144.1°W |
| Height | 794 km |
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