| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 | FENGYUN 1C DEB |
| Spacetrack catalog number | 23087 | 31554 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Sep 22 10:39 | 2023 Sep 21 10:36 |
| Time of closest approach (UTC) | 2023 Jun 03 22:49:19.736 |
| Minimum distance | 3281.179 km |
| Height difference | -15.175 km |
| Relative speed | 13.425 km/s |
| Angle between velocity vectors | 129° |
| Geographic position | 57.8°N, 74.8°W |
| Height | 851 km |
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