Ariadaeus (crater)

Ariadaeus is a small, bowl-shaped lunar impact crater on the western shores of Mare Tranquillitatis. It lies to the north of the crater Dionysius, and to the west-southwest of Arago. The crater is joined along the northeast rim by the slightly smaller Ariadaeus A, and the two form a double-crater. Its diameter is 10.4 km.[1]

Ariadaeus crater 4090 h1.jpg
Coordinates4°36′N 17°18′E / 4.6°N 17.3°E / 4.6; 17.3Coordinates: 4°36′N 17°18′E / 4.6°N 17.3°E / 4.6; 17.3
Diameter10.4 km
Depth1.8 km
Colongitude342° at sunrise
EponymPhilippus Arrhidaeus
Oblique view from Apollo 10, with Ariadaeus in lower left and Rima Ariadaeus extending to the horizon
Rimae Ariadaeus from Apollo 10. NASA photo.

This crater marks the eastern extent of the rille designated Rima Ariadaeus. This wide rille extends in a nearly straight line to the west-northwest, passing just to the north of the crater Silberschlag. Other rille systems lie in the vicinity, including the Rimae Ritter to the southeast and Rimae Sosigenes to the northeast.

The crater was named after Philip III of Macedon (Arrhidaeus).[1][2]

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 Ariadaeus.

Ariadaeus Latitude Longitude Diameter
A 4.6° N 17.5° E 8 km
B 4.9° N 15.0° E 8 km
D 4.9° N 17.0° E 4 km
E 5.3° N 17.7° E 24 km
F 4.4° N 18.0° E 3 km


  1. ^ a b "Ariadaeus (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  2. ^ Antonín Rükl, Atlas of the Moon (Hamlyn, 1991), p. 96.


External linksEdit