LunarEclipseDetailsPenumbralMagnitude Property

Penumbral magnitude. The fraction of the Moon's diameter that is covered by Earth's penumbra (lighter part of Earth's shadow). The penumbral magnitude of a total lunar eclipse is usually greater than 2 while the penumbral magnitude of a partial lunar eclipse is always greater than 1 and usually smaller than 2.

public double PenumbralMagnitude { get; }