| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Delta 139 |
| Spacetrack catalog number | 31357 | 12291 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 23 14:11 | 2024 Dec 23 10:26 |
| Time of closest approach (UTC) | 2024 Dec 24 05:54:27.327 |
| Minimum distance | 4.483 km |
| Height difference | -4.441 km |
| Relative speed | 12.306 km/s |
| Angle between velocity vectors | 111° |
| Geographic position | 74.0°S, 0.1°W |
| Height | 826 km |
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