Search results
Results from the WOW.Com Content Network
In celestial navigation, lunar distance, also called a lunar, is the angular distance between the Moon and another celestial body. The lunar distances method uses this angle and a nautical almanac to calculate Greenwich time if so desired, or by extension any other time. That calculated time can be used in solving a spherical triangle.
In contrast, the Lunar distance (LD or ), or Earth–Moon characteristic distance, is a unit of measure in astronomy. More technically, it is the semi-major axis of the geocentric lunar orbit . The average lunar distance is approximately 385,000 km (239,000 mi), or 1.28 light-seconds ; this is roughly 30 times Earth's diameter .
Chart of the far side of the moon with lines of longitude and latitude. The selenographic coordinate system is used to refer to locations on the surface of Earth 's moon . Any position on the lunar surface can be referenced by specifying two numerical values, which are comparable to the latitude and longitude of Earth.
The semi-major axis of the geocentric lunar orbit, called the lunar distance, is approximately 400,000 km (250,000 miles or 1.28 light-seconds), comparable to going around Earth 9.5 times. [ 178 ] The Moon makes a complete orbit around Earth with respect to the fixed stars, its sidereal period , about once every 27.3 days.
Just hours after launching from Florida toward deep space early Monday morning, the first US lunar lander to take off in five decades is in jeopardy. Peregrine mission abandons moon landing ...
For premium support please call: 800-290-4726 more ways to reach us
Pages for logged out editors learn more. Contributions; Talk; Lunar distance (astronomy)
Pages in category "Films set in Cape Cod and the Islands" The following 11 pages are in this category, out of 11 total. This list may not reflect recent changes .