Apianus (crater)

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The crater area in a selenochromatic format image (Si) Almanon-Baco Si Ferruggia Zetta.jpg
The crater area in a selenochromatic format image (Si)
Apianus
Apianus crater 4101 h1.jpg
Lunar Orbiter 4 image
Coordinates 26°54′S7°54′E / 26.9°S 7.9°E / -26.9; 7.9
Diameter 63.44 km
Depth 2.08 km
Colongitude 356° at sunrise
Eponym Petrus Apianus

Apianus is a lunar impact crater that is located on the rugged south-central highlands of the Moon. It is named after 16th century German mathematician and astronomer Petrus Apianus. [1] [2] It is located to the northeast of the crater Aliacensis, and to the northwest of Poisson. The worn crater Krusenstern is attached to the west-northwestern rim.

Contents

Description

The outer wall of the crater has been worn and eroded by subsequent impacts, and a pair of small craterlets overlay the rim to the southeast and northeast. The central crater is 63 kilometers in diameter and 2,080 meters deep. [1] The craterlet on the southeast rim, Apianus B, is a member of a cluster of co-joined craterlets that includes Apianus T and Apianus U. The interior floor of the central crater is relatively smooth and lacks a central peak, although the surface appears somewhat convex. Only a few tiny craterlets mark the surface. [3]

The crater is from the Nectarian period, 3.92 to 3.85 billion years ago. [1]

Satellite craters

Apianus and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1 Apianus lunar crater map.jpg
Apianus and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Apianus. [4]

ApianusLatitudeLongitudeDiameterRef
A25.7° S6.6° E13.11 km WGPSN
B27.4° S9.0° E10.21 km WGPSN
C28.1° S10.5° E19.64 km WGPSN
D26.1° S10.7° E33.66 km WGPSN
E28.8° S8.2° E8.39 km WGPSN
F28.1° S6.4° E5.39 km WGPSN
G28.1° S7.7° E4.02 km WGPSN
H28.1° S8.7° E6.57 km WGPSN
J26.3° S8.6° E6.71 km WGPSN
K27.4° S9.3° E6.44 km WGPSN
L29.1° S10.9° E4.67 km WGPSN
M24.7° S10.3° E6.98 km WGPSN
N28.8° S9.9° E3.46 km WGPSN
P25.2° S9.2° E41.59 km WGPSN
R25.7° S8.9° E13.1 km WGPSN
S25.6° S8.5° E23.96 km WGPSN
T27.7° S9.5° E11.52 km WGPSN
U27.9° S9.0° E16.82 km WGPSN
V25.3° S10.5° E3.2 km WGPSN
W25.5° S7.4° E9.68 km WGPSN
X28.3° S7.1° E3.1 km WGPSN

See also

References

  1. 1 2 3 Autostar Suite Astronomer Edition. CD-ROM. Meade, April 2006.
  2. ↑ "Apianus (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  3. ↑ Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN   0-913135-17-8.
  4. ↑ Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN   0-521-81528-2.
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