"In a lunar eclipse, if the width of the shadow of the Earth is twice the width
of the Moon, then the width of the Earth itself is (very nearly) three times
...."

http://www-istp.gsfc.nasa.gov/stargaze/Sshadow.htm

Need dates and photos of partials or look in August to really check orbit
accuracy. I figured it was diameter and must be close depending on what pov
does after that. Looked like the moon was heading for a full eclipse :(

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