CAAParallax_Ecliptic2Topocentric: CAAParallax_Ecliptic2Topocentric

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

Description

CAAParallax_Ecliptic2Topocentric

Usage

CAAParallax_Ecliptic2Topocentric(Lambda, Beta, Semidiameter, Distance, Epsilon, Latitude, Height, JD)

Arguments

Lambda	Lambda The ecliptical longitude in degrees.
Beta	Beta The ecliptical latitude in degrees.
Semidiameter	Semidiameter The geocentric semi diameter in degrees.
Distance	Distance The distance (in astronomical units) to the Earth.
Epsilon	Epsilon The obliquity of the ecliptic in degrees.
Latitude	Latitude The latitude in degrees.
Height	Height The observer's height above sea level in meters.
JD	JD The date in Dynamical time to calculate for.

Value

A class containing

Lambda The topocentric ecliptical longitude in degrees.

Beta The topocentric ecliptical latitude in degrees.

Semidiameter The topocentric semi diameter in degrees.

Author(s)

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

References

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

Examples

CAAParallax_Ecliptic2Topocentric(Lambda = 20, Beta = 12.5, Semidiameter = 1.04, 
         Distance = 0.005, Epsilon = 23, Latitude = 25, Height = 3200, JD = 2456597.5)

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