Class FK5

  extended by cds.astro.Astroframe
      extended by cds.astro.Equatorial
          extended by cds.astro.FK5
All Implemented Interfaces:

public class FK5
extends Equatorial

The FK5 is an equatorial coordinate system (coordinate system linked to the Earth) based on its J2000 position. As any equatorial frame, the FK5-based follows the long-term Earth motion (precession).

See Also:
Serialized Form

Field Summary
Fields inherited from class cds.astro.Equatorial
equinox, toBaseEquinox
Fields inherited from class cds.astro.Astroframe
base_epoch, ed_lat, ed_lon, epoch, hms, IAUframes, ICRSmatrix, name, precision
Constructor Summary
          Instanciate an FK5 frame (at default J2000 equinox)
FK5(double equinox)
          Instanciate an FK5 frame
Method Summary
 double[][] toICRSmatrix()
          Defines the rotation matrix to rotate to ICRS
Methods inherited from class cds.astro.Equatorial
Methods inherited from class cds.astro.Astroframe
create, create, equals, equals, fromICRS, fromICRS, isIAU, parse, setFrameEpoch, setICRSmatrix, toICRS, toICRS, toString
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail


public FK5(double equinox)
Instanciate an FK5 frame

equinox - the equinox of definition, in Julian Year.


public FK5()
Instanciate an FK5 frame (at default J2000 equinox)

Method Detail


public double[][] toICRSmatrix()
Defines the rotation matrix to rotate to ICRS

Specified by:
toICRSmatrix in class Astroframe
the 3x3 rotation matrix to convert a position to ICRS frame