Change Equinox Reference Dialog

This dialog allows you to test the effect of an equinox change on the longitude and latitude of a body.

The precession formulae are those used by Proastro.

Ignore DeltaT: don't make the correction UT-ET, from the input dates, get the Julian Day and forget the ET-UT correction.

Results: Longitude, latitude and distance of the body for the final equinox.