CAAMoonIlluminatedFraction_GeocentricElongation: CAAMoonIlluminatedFraction_GeocentricElongation

In helixcn/skycalc: Computational Astronomy in R based on PJ Naughter's AA+ library

Description

CAAMoonIlluminatedFraction_GeocentricElongation

Usage

CAAMoonIlluminatedFraction_GeocentricElongation(ObjectAlpha, ObjectDelta, SunAlpha, SunDelta)

Arguments

ObjectAlpha	ObjectAlpha The geocentric right ascension of the object (e.g. the Moon) expressed as an hour angle.
ObjectDelta	ObjectDelta The geocentric declination of the object (e.g. the Moon) in degrees.
SunAlpha	SunAlpha The geocentric right ascension of the Sun expressed as an hour angle.
SunDelta	SunDelta The geocentric declination of the Sun in degrees.

Value

the elongation of the object from the Sun

Author(s)

C++ code by PJ Naughter, imported to R by Jinlong Zhang

References

Meeus, J. H. (1991). Astronomical algorithms. Willmann-Bell, Incorporated.

Examples

CAAMoonIlluminatedFraction_GeocentricElongation(ObjectAlpha = 20, ObjectDelta = 12.5, SunAlpha = 18.90, SunDelta = -12)

helixcn/skycalc documentation built on March 31, 2021, 5:45 a.m.