| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | FENGYUN 1C DEB |
| Spacetrack catalog number | 12212 | 29913 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2025 Jan 18 20:45 | 2025 Jan 18 22:52 |
| Time of closest approach (UTC) | 2024 Dec 09 10:03:24.151 |
| Minimum distance | 36.410 km |
| Height difference | 0.825 km |
| Relative speed | 5.082 km/s |
| Angle between velocity vectors | 40° |
| Geographic position | 80.7°N, 47.4°E |
| Height | 919 km |
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