| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb NNS O-12 |
| Spacetrack catalog number | 37900 | 4843 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 16 03:03 | 2024 Dec 22 01:34 |
| Time of closest approach (UTC) | 2024 Dec 23 17:59:06.468 |
| Minimum distance | 1.265 km |
| Height difference | -0.589 km |
| Relative speed | 14.445 km/s |
| Angle between velocity vectors | 166° |
| Geographic position | 25.9°S, 118.4°E |
| Height | 1068 km |
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