NOT KNOWN FACTS ABOUT EPOCH SIGN IN

Epoch as opposed to equinoxDate-references for coordinate systemsEpochs and intervals of validityChanging the regular equinox and epochSpecifying an epoch or equinoxBesselian yearsJulian years and J2000Epoch of the daySee alsoReferencesNotesCitationsSourcesFurther readingExternal inbound linksThese illustration of time is mainly for inner use. On p

An illustration of how this operates: if a star's place is calculated by another person right now, they then use a normal transformation to get the place expressed when it comes to the conventional reference frame of J2000, and it is often then this J2000 placement which is shared with Some others.Astronomical portions can be specified in any of se