| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 | FENGYUN 1C DEB |
| Spacetrack catalog number | 23087 | 37036 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jul 11 18:38 | 2025 Jul 06 18:43 |
| Time of closest approach (UTC) | 2024 Jul 23 06:35:18.520 |
| Minimum distance | 4635.845 km |
| Height difference | 4.224 km |
| Relative speed | 14.060 km/s |
| Angle between velocity vectors | 142° |
| Geographic position | 40.3°S, 134.8°E |
| Height | 854 km |
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