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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
One-body fix, clarification
From: Peter Hakel
Date: 2009 Apr 26, 13:12 -0700
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From: Peter Hakel
Date: 2009 Apr 26, 13:12 -0700
I should have added in my previous post that "my" LHA also differs in sign from the conventional LHA. Mine is the angle from the local meridian to the GP meridian measured eastward as positive. It occurs to me now that I perhaps should have called it the meridian angle t; does this conform with the standard definition? If so, then the hour angle HA = GHA + t, and Longitude = -HA (for HA < 180), Longitude = 360 - HA (for HA > 180).
If Ho < 0, then replace t from the inverse sine with SIGN(t)*180 - t, otherwise keep t unchanged.
Peter Hakel
If Ho < 0, then replace t from the inverse sine with SIGN(t)*180 - t, otherwise keep t unchanged.
Peter Hakel
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