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