Palus Somni

Palus Somni

Coordinates	14°06′N 45°00′E / 14.1°N 45.0°E / 14.1; 45.0Coordinates: 14°06′N 45°00′E / 14.1°N 45.0°E / 14.1; 45.0
Diameter	163 km
Eponym	Marsh of Sleep

Palus Somni (Latin for "Marsh of Sleep") is an area on the Moon of relatively level but somewhat uneven terrain that lies along the northeastern edge of Mare Tranquillitatis and the Sinus Concordiae. It has selenographic coordinates 14.1° N, 45.0° E, and has a diameter of 163 km.

The surface of this feature has low ridges and patches of level terrain. It has a higher albedo than the lunar mare to the west, and is a shade of grey typical of continental terrain. A few minor craters lie within its borders, with the flooded Lyell along the west edge, Crile to the east, and Franz to the northwest. The bright crater Proclus is to the northeast.

In 1907 it was described as having "a color which is unique upon the moon, a kind of light brown, quite unlike the hue of any of the other plains or mountain regions"^[1]

References

↑ Serviss, Garrett P.: The Moon. 1907.

Lunar maria

Oceanus	Procellarum

Mare	Anguis Australe Cognitum Crisium Fecunditatis Frigoris Humboldtianum Humorum Imbrium Ingenii Insularum Marginis Moscoviense Nectaris Nubium Orientale Serenitatis Smythii Spumans Tranquillitatis Undarum Vaporum

Lacus	Aestatis Autumni Bonitatis Doloris Excellentiae Felicitatis Gaudii Hiemalis Lenitatis Luxuriae Mortis Oblivionis Odii Perseverantiae Solitudinis Somniorum Spei Temporis Timoris Veris

Sinus	Aestuum Amoris Asperitatis Concordiae Fidei Honoris Iridum Lunicus Medii Roris Successus

Paludes	Epidemiarum Putredinis Somni

List of maria on the Moon

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