<P> Lunar distance (LD or Δ ⊕ L (\ textstyle \ Delta _ (\ oplus L))), also called Earth--Moon distance, Earth--Moon characteristic distance, or distance to the Moon, is a unit of measure in astronomy . It is the average distance from the center of Earth to the center of the Moon . More technically, it is the mean semi-major axis of the geocentric lunar orbit . It may also refer to the time - averaged distance between the centers of the Earth and the Moon, or less commonly, the instantaneous Earth--Moon distance . The lunar distance is approximately a quarter of a million miles . </P> <P> The mean semi-major axis has a value of 384,402 km (238,856 mi). The time - averaged distance between Earth and Moon centers is 385,000.6 km (239,228.3 mi). The actual distance varies over the course of the orbit of the Moon, from 356,500 km (221,500 mi) at the perigee to 406,700 km (252,700 mi) at apogee, resulting in a differential range of 50,200 km (31,200 mi). </P>

What is the distance between earth and moon
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