| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | FENGYUN 1C DEB |
| Spacetrack catalog number | 13561 | 31439 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 12:50 | 2024 Dec 20 07:38 |
| Time of closest approach (UTC) | 2024 Dec 29 10:08:05.850 |
| Minimum distance | 4.405 km |
| Height difference | 4.373 km |
| Relative speed | 14.535 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 32.0°S, 131.0°E |
| Height | 887 km |
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