| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | FENGYUN 1C DEB |
| Spacetrack catalog number | 13561 | 31732 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 12:50 | 2024 Dec 22 13:45 |
| Time of closest approach (UTC) | 2024 Dec 25 10:53:27.578 |
| Minimum distance | 4.810 km |
| Height difference | -0.272 km |
| Relative speed | 14.408 km/s |
| Angle between velocity vectors | 153° |
| Geographic position | 49.5°S, 44.2°W |
| Height | 858 km |
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