Function astro::planet::phase_angl [−] [src]

pub fn phase_angl(r: f64, delta: f64, R: f64) -> f64

Computes a planet's phase angle

Returns

  • phase_angl: Phase angle of the planet | in radians

Arguments

  • r : Planet-Sun distance | in AU
  • delta: Planet-Earth distance | in AU
  • R : Sun-Earth distance | in AU