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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Bob Goethe
Date: 2022 Oct 14, 08:54 -0700
>>it took an extraordinay long time to produce Moon Ephemeris theories accurate to +/- 6" .
>>..."theories" whether analytical or numerical integrations
I have struggled with this whole concept. It seems like the moon's orbit, as one of the class called "the three-body problem" may be chaotic: fundamentally unpredictable. But then I read other things that suggest we can predict the moon's orbit with enormous accuracy centuries into the future.
I lack the math background to understand the phrases "analytical integrations" and "numerical integrations". I look forward to the discussion here.
I have observed reduced accuracy in my own moon sights...but when I did, I always assumed that the moon's illuminated limb didn't QUITE wrap around to the exact bottom for a lower limb observation, or to the exact top for an upper limb.
Bob
