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Home > Lunar distance

In celestial navigation, lunar distance is in the angle of the Moon's centre from the Sun or from the bright stars. It is measured using a sextant. Using the lunar distance and a nautical almanac it is possible to calculate the current time and thus the current longitude.

In astronomy, a lunar distance is the distance from Earth to the Moon. The average distance from Earth to the Moon is 384,403 kilometer (238,857 miles). High-precision measurements of the lunar distance are made with the help of lidar measurements of the round-trip times for light beams between lasers at Earth-based monitoring stations and retroreflectors placed on the Moon. (See Lunar Laser Ranging ExperimentThe ongoing Lunar Laser Ranging Experiment was first made possible by a lunar laser ranging retroreflector array planted on the Moon on July 21, 1969, by the crew of the Apollo 11. Since then, the distance between the Earth and the Moon has been measured).

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Astronomy NavigationThis article concerns navigation in the sense of determination of position and direction on the surface of the Earth. See Navigation (disambiguation) for other meanings. There are several traditions of navigation . Polynesian navigation The Polynesian nav

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Topics: Lunar Distance, Lunar Society, Lunar Rover, Lunar Eclipse...

Lunar SocietyThe Lunar Society was a discussion club, of a number of prominent industrialists and scientists, who met regularly in the latter half of the 18th century in Birmingham, England. They met from 1765 to 1813. At first called the Lunar Circle, 'Lunar Society'Lunar Rovervehicle (NASA) The Lunar Rover was a manned land vehicle for transport on the Moon. It was transported in the Apollo Lunar Module, which was part of the Apollo spacecraft. It was used for greater surface mobility during the Apollo program J-class missionsLunar eclipseAn eclipse occurs whenever the Sun, Earth and Moon line up exactly. If this occurrence is at the time of a full moon where the Moon passes through the Earth's shadow, it is called a lunar eclipse . The type and length of lunar eclipse depend upon the Moon
Lunar calendarA lunar calendar is a calendar whose date indicates the moon phase. This is normally done by having a month which corresponds to a lunation so that the day of month indicates the moon phase. A lunar calendar may indicate the season as well as the moon phaLunar phaseIn astronomy, a phase of the Moon is any of the aspects or appearances presented by the Moon as seen from Earth, determined by the portion of the Moon that is visibly illuminated by the Sun. The lunar phases vary cyclically as the Moon orbits the Earth, aLunar deityIn the study of mythology, a lunar deity is a god or goddess associated with or symbolizing the Moon. This deity was often associated with hunting, warriors, and wisdom, and was often related to an enemy of the solar deity. Lunar Deities: Aboriginal mytho
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