Alphonsus (moon crater)
Alphonsus | ||
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With moon groove Alphonsus Rimae Alphonsus , by Lunar Orbiter 4 was added | ||
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position | 13.38 ° S , 2.9 ° 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 |
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.
Letter | position | diameter | link |
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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] |
Web links
- Alphonsus in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS
- SkyTrip: Alphonsus
- The-moon.wikispaces.com: Alphonsus (English)
- Alphonsus crater in the Digital Lunar Orbiter Photographic Atlas of the Moon , image iv_108_h2
- Spektrum.de: amateur recordings 1 2 3 4 5