| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | FENGYUN 1C DEB |
| Spacetrack catalog number | 12172 | 38725 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 00:38 | 2024 Dec 21 06:26 |
| Time of closest approach (UTC) | 2024 Dec 24 16:54:31.742 |
| Minimum distance | 3.036 km |
| Height difference | 1.643 km |
| Relative speed | 10.393 km/s |
| Angle between velocity vectors | 88° |
| Geographic position | 77.7°N, 14.9°W |
| Height | 801 km |
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