CAAPrecession_PrecessEquatorialFK4: CAAPrecession_PrecessEquatorialFK4

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

Description

CAAPrecession_PrecessEquatorialFK4

Usage

CAAPrecession_PrecessEquatorialFK4(Alpha, Delta, JD0, JD)

Arguments

Alpha	Alpha The right ascension in hours of the object at time JD.
Delta	Delta The declination in degrees of the object at time JD.
JD0	JD0 The date in Dynamical time corresponding to the initial epoch.
JD	JD The date in Dynamical time corresponding to the final epoch.

Author(s)

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

References

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

Examples

CAAPrecession_PrecessEquatorialFK4(Alpha = 22, Delta = 41, JD0 = 285700, JD = 287900)

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