A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Herman Dekker
Date: 2017 Jun 6, 09:35 -0700
Gave it a try on the TI-89 Starpilot.
First DR Lat 90°N Lon 00° gave error, I suppose something went to infinity or so.
Second Lat 89,5° N Lon 00,5 E
This resulted in acceptable a values.
Then fix by computation and updated the DR every time.
Calculated this about 8 times, everytime updated the DR until no further improvement.
Result: Fix 89° 56,5' N, 67° 41,5 E well no so near as the others, but we now about where we are.