| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 23088 | 31416 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jun 20 12:21 | 2025 Jun 18 20:27 |
| Time of closest approach (UTC) | 2025 May 20 00:50:41.611 |
| Minimum distance | 32.514 km |
| Height difference | -0.782 km |
| Relative speed | 14.247 km/s |
| Angle between velocity vectors | 149° |
| Geographic position | 66.8°S, 50.1°W |
| Height | 868 km |
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