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0.0000000000000000550 parsecs is about 0.000000005 times as long as The Distance from Earth to the Moon.
In other words, it's 0.0000000044145720 times the length of The Distance from Earth to the Moon, and the length of The Distance from Earth to the Moon is 226,522,500 times that amount.
(a.k.a. Luna) (median of semi-major axis, or apigee, and semi-minor axes, or perigee)
The orbit of the Moon around the Earth is elliptical, with an average distance of 0.000000012458740 parsecs from center-to-center. About 428.376 kg of moon rock have been cataloged on the Earth, from the American Apollo and Soviet Luna Programs, and from samples that have been extracted from meteorites.
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