| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | NNS O-31 |
| Spacetrack catalog number | 31274 | 19420 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 19:08 | 2024 Dec 22 15:37 |
| Time of closest approach (UTC) | 2024 Dec 28 21:29:44.000 |
| Minimum distance | 3.388 km |
| Height difference | 3.376 km |
| Relative speed | 14.399 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 43.8°N, 40.8°W |
| Height | 1128 km |
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