Function astro::sun::ephemeris [−] [src]

pub fn ephemeris(JD: f64, app_long: f64, app_long_with_nut: f64, oblq_eclip: f64) -> (f64, f64, f64)

Return quantites used in the ephemeris for physical observations of the Sun

Returns

(P, B0, L0)

P : Position angle of the northern extremity of the axis of rotation, measured eastwards from the North point of the solar disk | in radians
B0: Heliographic latitude of the center of the solar disk | in radians
L0: Heliographic longitude of the center of the solar disk | in radians

Arguments

JD : Julian (Ephemeris) day
app_long: Apparent longitude of the Sun | in radians, including the effect of abberation and not that of nutation
app_long_with_nut: Apparent longitude of the Sun | in radians, including the effect of abberation and that of nutation
oblq_eclip: True obliquity of the ecliptic | in radians

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