| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 23088 | 30150 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 19:24 | 2021 Jan 15 19:14 |
| Time of closest approach (UTC) | 2020 Dec 05 23:40:41.040 |
| Minimum distance | 152.920 km |
| Height difference | -1.635 km |
| Relative speed | 6.219 km/s |
| Angle between velocity vectors | 49° |
| Geographic position | 53.9°S, 81.3°W |
| Height | 864 km |
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