The fourth method is through the parallactic inequality in the moon's motion.
The diurnal inequality is shown for " winter " and " summer " respectively.
The theoretical element is the ratio of the parallactic inequality to the solar parallax.
Yet even in a church court inequality, generally speaking, is visible to the extent that an elder is not usually eligible for the moderator's chair.
Doubt was first thrown on the accuracy of this number by an announcement from Hansen in 1862 that the observed parallactic inequality of the moon was irreconcilable with the accepted value of the solar parallax, and indicated the much larger value 8.97".