Epoch (geology), a span of time on the geologic time scale shorter than a interval and for a longer period than an ageThere's a Particular indicating of your expression "equinox (and ecliptic/equator) of date". When coordinates are expressed as polynomials in time relative to some reference body outlined in this way, Meaning the values attained to

If enough time variance is modest, then rather quick and tiny corrections for that precession could suffice. If the time distinction gets substantial, then fuller plus more accurate corrections should be utilized. For this reason, a star place go through from a star atlas or catalog based upon a adequately outdated equinox and equator can not be ap