Epoch vs . equinoxDate-references for coordinate systemsEpochs and durations of validityChanging the typical equinox and epochSpecifying an epoch or equinoxBesselian yearsJulian several years and J2000Epoch of your daySee alsoReferencesNotesCitationsSourcesFurther readingExternal inbound linksThe most crucial usage of astronomical quantities specif

An example of how this performs: if a star's placement is measured by a person these days, they then use a typical transformation to get the situation expressed with regards to the standard reference body of J2000, and it is often then this J2000 placement which is shared with others.Although a method's behavior after overflow happens just isn't ne