| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 | FENGYUN 1C DEB |
| Spacetrack catalog number | 23087 | 30411 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Sep 28 09:16 | 2023 Sep 28 06:54 |
| Time of closest approach (UTC) | 2023 May 31 23:53:38.493 |
| Minimum distance | 2322.992 km |
| Height difference | 14.030 km |
| Relative speed | 5.433 km/s |
| Angle between velocity vectors | 43° |
| Geographic position | 34.9°N, 51.6°E |
| Height | 842 km |
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