| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 | FENGYUN 1C DEB |
| Spacetrack catalog number | 23087 | 31442 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Sep 28 09:16 | 2023 Sep 26 11:20 |
| Time of closest approach (UTC) | 2023 Jun 03 22:54:31.757 |
| Minimum distance | 1427.727 km |
| Height difference | -8.746 km |
| Relative speed | 12.806 km/s |
| Angle between velocity vectors | 119° |
| Geographic position | 68.4°N, 49.5°W |
| Height | 852 km |
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