| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 23088 | 31092 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jun 20 12:21 | 2025 Jun 17 20:37 |
| Time of closest approach (UTC) | 2025 May 19 08:01:32.017 |
| Minimum distance | 41.426 km |
| Height difference | 2.243 km |
| Relative speed | 8.851 km/s |
| Angle between velocity vectors | 73° |
| Geographic position | 64.6°S, 74.8°W |
| Height | 865 km |
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