| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 23088 | 37012 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 19:24 | 2021 Jan 05 15:56 |
| Time of closest approach (UTC) | 2020 Dec 07 04:01:39.876 |
| Minimum distance | 11.815 km |
| Height difference | -4.088 km |
| Relative speed | 14.784 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 44.1°N, 162.4°E |
| Height | 853 km |
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