| Primary satellite | Secondary satellite |
| Name | NOAA 12 | deb Kosmos-397 |
| Spacetrack catalog number | 21263 | 5098 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 22:38 | 2021 Mar 08 06:04 |
| Time of closest approach (UTC) | 2021 Jan 22 06:09:09.558 |
| Minimum distance | 45.450 km |
| Height difference | 5.945 km |
| Relative speed | 14.491 km/s |
| Angle between velocity vectors | 148° |
| Geographic position | 56.7°N, 164.6°E |
| Height | 807 km |
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