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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.
In 1750, Johann Meyer produced the first reliable set of lunar coordinates that permitted astronomers to locate lunar features. [citation needed] Lunar mapping became systematic in 1779 when Johann Schröter began meticulous observation and measurement of lunar topography.
The latitudes and longitudes are in selenographic coordinates. Albedo. These features have a high albedo compared to the surrounding terrain. Name Coordinates
It is located at selenographic coordinates 37.56° N, 30.8° E, and has a diameter of 424.76 kilometers. [1] The name is Latin for Lake of Dreams, a title given to this feature by Giovanni Riccioli. [2] It is the largest of the lunar features designated Lacus. Lacus Somniorum is an irregular feature with complex, somewhat ill-defined borders.
The center of the valley lies at selenographic coordinates, and it has a length of 445 km. At its maximum extent this valley has a width of about 30 km, but it narrows to 10 km at the southeastern extreme.
The selenographic coordinates of this feature are 11.7° N, 17.9° E. It has a diameter of 112 km. [1] Sinus Honoris has a wide mouth and is bordered by uneven terrain to the north and southwest. Where the bay joins the mare, rille systems extend to the north and south.
The selenographic coordinates of this range are 38.4° N, 10.0° E, and it has an official diameter of 445 km. [1] However some observers list the length as being up to 550 km. The tallest peaks in this range reach heights of 6 km, undoubtedly providing an expansive view of the surroundings from their tops.
The selenographic coordinates of the Lacus Mortis are 45.13° N, 27.32° E, and it has a diameter of 158.78 km (98.66 mi). The feature is positioned between lunar latitudes 42.5° to 47.75° north, and longitudes 23.61° to 31.03° east. [1]