| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 23088 | 29971 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jun 20 12:21 | 2025 Jun 20 02:52 |
| Time of closest approach (UTC) | 2025 May 19 16:22:30.952 |
| Minimum distance | 61.466 km |
| Height difference | -1.538 km |
| Relative speed | 14.110 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 68.3°S, 84.4°E |
| Height | 868 km |
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