WHAT DOES EPOCH SIGN IN MEAN?

Epoch as opposed to equinoxDate-references for coordinate systemsEpochs and periods of validityChanging the standard equinox and epochSpecifying an epoch or equinoxBesselian yearsJulian several years and J2000Epoch on the daySee alsoReferencesNotesCitationsSourcesFurther readingExternal back linksThis kind of illustration of your time is principall

An example of how this will work: if a star's posture is calculated by anyone these days, they then use a normal transformation to acquire the situation expressed with regard to the common reference body of J2000, and it is frequently then this J2000 posture which can be shared with Other people.Astronomical quantities might be specified in any of