| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | FENGYUN 1C DEB |
| Spacetrack catalog number | 12212 | 30567 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2025 Jan 18 20:45 | 2025 Jan 18 23:17 |
| Time of closest approach (UTC) | 2024 Dec 08 16:01:53.968 |
| Minimum distance | 81.759 km |
| Height difference | 2.439 km |
| Relative speed | 6.061 km/s |
| Angle between velocity vectors | 48° |
| Geographic position | 80.3°S, 132.8°E |
| Height | 922 km |
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