| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 | FENGYUN 1C DEB |
| Spacetrack catalog number | 23087 | 29993 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2025 Apr 27 09:08 | 2025 Apr 27 13:02 |
| Time of closest approach (UTC) | 2024 Jul 23 17:39:48.513 |
| Minimum distance | 2170.659 km |
| Height difference | -1.225 km |
| Relative speed | 10.896 km/s |
| Angle between velocity vectors | 94° |
| Geographic position | 62.0°S, 90.4°E |
| Height | 866 km |
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