Macrobius (crater)

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Macrobius crater AS17-M-0296.jpg
Apollo 17 mapping camera image
Coordinates21°18′N 46°00′E / 21.3°N 46.0°E / 21.3; 46.0Coordinates: 21°18′N 46°00′E / 21.3°N 46.0°E / 21.3; 46.0
Diameter63 km
Depth3.9 km
Colongitude314° at sunrise

Macrobius is a prominent lunar impact crater located to the northwest of the Mare Crisium. Its diameter is 63 km. It was named after ancient Roman writer Macrobius.[1] It lies on the southeast edge of the Lacus Bonitatis, a small lunar mare. The somewhat smaller crater Tisserand lies just to the east.

Oblique view from Apollo 17

The outer wall of Macrobius has a multiply terraced inner surface, with some slumping along the top of the rim. The small satellite crater Macrobius C lies across the western rim, but the wall is otherwise relatively free of significant wear. In the center of the floor is a central mountain complex. There is a low ridge in the western interior, but the remainder of the floor is relatively level.

Satellite craters[edit]

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

Macrobius Latitude Longitude Diameter
C 20.8° N 45.0° E 10 km
E 18.7° N 46.8° E 10 km
F 22.5° N 48.5° E 11 km
K 21.5° N 40.2° E 12 km
M 25.0° N 41.0° E 42 km
N 22.8° N 40.8° E 5 km
P 23.0° N 39.5° E 18 km
Q 20.4° N 47.6° E 9 km
S 23.3° N 49.6° E 26 km
T 23.8° N 48.6° E 29 km
U 25.0° N 42.8° E 6 km
V 25.4° N 43.3° E 5 km
W 24.8° N 44.6° E 26 km
X 23.0° N 42.2° E 4 km
Y 23.6° N 42.2° E 5 km
Z 24.3° N 42.6° E 5 km

The following craters have been renamed by the IAU.


Satellite craters of Macrobius
Macrobius at center, near the terminator as viewed from Earth, with Mare Crisium to the right
  1. ^ "Macrobius (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  • Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
  • Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
  • Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 978-0-936389-27-1.
  • McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.
  • Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU". Space Science Reviews. 12 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763.
  • Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.
  • Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.
  • Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.
  • Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.
  • Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
  • Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.

External links[edit]