| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | FENGYUN 1C DEB |
| Spacetrack catalog number | 13561 | 29796 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 12:50 | 2024 Dec 22 16:38 |
| Time of closest approach (UTC) | 2024 Dec 28 14:25:14.039 |
| Minimum distance | 4.970 km |
| Height difference | 1.956 km |
| Relative speed | 14.254 km/s |
| Angle between velocity vectors | 148° |
| Geographic position | 55.9°S, 94.2°W |
| Height | 857 km |
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