| Primary satellite | Secondary satellite |
| Name | Envisat | FENGYUN 1C DEB |
| Spacetrack catalog number | 27386 | 29794 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2026 Jan 13 15:13 | 2026 Jan 13 10:15 |
| Time of closest approach (UTC) | 2025 Dec 16 17:47:32.068 |
| Minimum distance | 17.943 km |
| Height difference | 3.782 km |
| Relative speed | 14.410 km/s |
| Angle between velocity vectors | 148° |
| Geographic position | 58.5°N, 142.7°E |
| Height | 771 km |
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