| Primary satellite | Secondary satellite |
| Name | Transit 4A | FENGYUN 1C DEB |
| Spacetrack catalog number | 116 | 29980 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2026 Jan 18 21:59 | 2026 Jan 18 10:02 |
| Time of closest approach (UTC) | 2025 Dec 21 06:21:24.888 |
| Minimum distance | 6.967 km |
| Height difference | 3.257 km |
| Relative speed | 14.577 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 46.7°N, 167.6°E |
| Height | 876 km |
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