A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Samuel L
Date: 2014 Nov 19, 10:34 -0800
Does the parallax value for Mars change from year to year?
The copy of the Altitude Correction Tables I have are dated 2003 and list the App. Alt. correction for Mars (on this general date) to be +0.2min for an Ha of less than 40d. So do I assume correctly that they are different each year?