| Primary satellite | Secondary satellite |
| Name | NPP | FENGYUN 1C DEB |
| Spacetrack catalog number | 37849 | 31946 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2026 Jan 20 07:40 | 2026 Jan 18 21:28 |
| Time of closest approach (UTC) | 2025 Dec 20 14:27:52.435 |
| Minimum distance | 64.494 km |
| Height difference | 0.507 km |
| Relative speed | 12.924 km/s |
| Angle between velocity vectors | 121° |
| Geographic position | 72.5°N, 43.7°W |
| Height | 839 km |
|