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Maestlin is a small, bowl-shaped impact crater located near the eastern edge of the lunar Oceanus Procellarum. It was named after German mathematician Michael Maestlin.[1] To the east lies the crater Encke and to the northeast is Kepler. Just to the southeast of Maestlin is the curved, ridge-like remains of Maestlin R, a walled plain that has been almost completed submerged by the mare. South of this feature is a system of linear rilles named Rimae Maestlin. The mare surface around Maestlin is dusted with ray material from Kepler.

Maestlin crater 4144 h1.jpg
Coordinates4°54′N 40°36′W / 4.9°N 40.6°W / 4.9; -40.6Coordinates: 4°54′N 40°36′W / 4.9°N 40.6°W / 4.9; -40.6
Diameter7 km
Depth1.6 km
Colongitude41° at sunrise
EponymMichael Maestlin
Oblique Lunar Orbiter 3 image of some of the Rimae Maestlin
Lunar Orbiter 4 image with Maestlin crater in upper left corner and Rimae Maestlin to the southeast of it
Maestlin G crater, from Lunar Orbiter 3

Satellite cratersEdit

By convention these features are identified on Lunar maps by placing the letter on the side of the crater midpoint that is closest to Maestlin.

Maestlin Latitude Longitude Diameter
G 2.0° N 42.1° W 4 km
H 4.7° N 43.5° W 7 km
R 3.5° N 41.5° W 61 km


  1. ^ "Gazetteer of Planetary Nomenclature | Maestlin". International Astronomical Union. Retrieved August 28, 2017.