Alphonsus (moon crater)

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Alphonsus
Alphonsus crater 4108 h2.jpg
With moon groove Alphonsus Rimae Alphonsus , by Lunar Orbiter 4 was added
Alphonsus (moon equatorial region)
Alphonsus
position 13.38 °  S , 2.9 °  W Coordinates: 13 ° 22 '48 "  S , 2 ° 54' 0"  W
diameter 111 km
Card sheet 77 (PDF)
Named after Alfonso X (Castile) (1221–1284)
Named since 1935
Unless otherwise stated, the information comes from the entry in the IAU / USGS database

110.54

Alphonsus is a lunar crater with a diameter of 117 km on the eastern edge of the Mare Nubium , immediately south of the crater Ptolemaeus . It is named after King Alfonso X of Castile.

The walls of the crater rise up to 3 km above the crater floor. A ridge running in north-south direction, 15 km wide and one km high in the center divides the crater floor. A system of lunar grooves , the Rimae Alphonsus, runs on the largely flat crater floor .

The astronomer Nikolai Alexandrowitsch Kosyrew discovered the transient moon phenomenon in Alphonsus in 1958 , a reddish veil, the cause of which is probably due to the molecular carbon emerging from the lunar rock and the UV radiation of the sun .

In 1965, the Ranger 9 space probe hit the crater at the end of its mission.

Alphonsus with side craters
Alphonsus and its surroundings, recorded by LROC (WAC)
List of Alphonsus minor craters
Letter position diameter link
A. 14.88 °  S , 2.32 °  W 4 km [1]
B. 13.25 °  S , 0.24 °  W 23 km [2]
C. 14.41 °  S , 4.92 °  W 3 km [3]
D. 14.97 °  S , 0.93 °  W 24 km [4]
G 12.37 °  S , 3.44 °  W 4 km [5]
H 15.63 °  S , 0.59 °  W 7 km [6]
J 15.14 °  S , 2.58 °  W 8 kilometers [7]
K 12.61 °  S , 0.16 °  W 21 km [8th]
L. 12.04 °  S , 3.77 °  W 4 km [9]
R. 14.41 °  S , 1.98 °  W 3 km [10]
X 15 °  S , 4.51 °  W 5 km [11]
Y 14.72 °  S , 1.97 °  W 3 km [12]

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