CAAParallactic_EclipticLongitudeOnHorizon: CAAParallactic_EclipticLongitudeOnHorizon

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

Description

CAAParallactic_EclipticLongitudeOnHorizon

Usage

CAAParallactic_EclipticLongitudeOnHorizon(LocalSiderealTime, ObliquityOfEcliptic, Latitude)

Arguments

LocalSiderealTime	LocalSiderealTime The local sidereal time measured in hours.
ObliquityOfEcliptic	ObliquityOfEcliptic The obliquity of the ecliptic in degrees.
Latitude	Latitude The latitude of the position in degrees.

Value

Returns the ecliptic longitude of two points which are (180 degrees apart) on the horizon.

Author(s)

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

References

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

Examples

CAAParallactic_EclipticLongitudeOnHorizon(LocalSiderealTime = 12.4, ObliquityOfEcliptic = 32, Latitude = 22)

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