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Lat: 21.3°N, Long: 46.0°E, Diam: 64 km, Depth: 4.05 km, Rükl: 26, Lower Imbrian

external image normal_Macrobius030914.jpg
Peter Lloyd The crater Macrobius imaged on day 17.8 of the lunar cycle so the Sun was low in the western sky on this part of the Moon.


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Description: Elger

(IAU Directions) MACROBIUS.--This, with a companion ring on the E., is a very beautiful object under a low sun. It is 42 miles in diameter, and is encircled by a bright, regular, but complex border, some 13,000 feet in height above the floor. Its crest is broken on the W. by a large brilliant crater, and its continuity is interrupted on the N. by a formation resembling a large double crater, which is associated with a number of low rounded banks and ridges extending some distance towards the N.E., and breaking the continuity of the glacis. The E. wall is much terraced, and on the N.E. includes a row of prominent depressions, well seen when the interior is about half illuminated under a rising sun. The central mountain is of the compound type, but not at all prominent. The companion ring, Macrobius C, is terraced internally on the E., and the continuity of its N. border broken by two depressions. There is a rill-valley between its N.W. side and Macrobius.

Description: Wikipedia


Additional Information

  • Depth data from Kurt Fisher database
    • Pike, 1976: 4.05 km
    • Westfall, 2000: 4.05 km
    • Viscardy, 1985: 3.7 km
    • Cherrington, 1969: 3.59 km
  • Central peak height
    • Sekiguchi, 1972: 1.6 km. A large hill on the NW of the central peak rises 0.8 km - fatastronomer
  • Macrobius A (Carmichael) and B (Hill) are thermal anomaly craters, implying youthful ages; the north wall of Macrobius itself also is an anomaly, due to the exposure of fresh boulders - Moore et al, 1980
  • Slightly westward of Macrobius (between Macrobius, Esclangon, and Hill) is a craterlet with an unusual winglike ("butterfly"-like) ejectablanket. This craterlet is described and depicted in NASA SP-362, APOLLO OVER THE MOON, A VIEW FROM ORBIT, Chapter 5: Craters (Part 2), Figure 113. AS15-87-11700 is the orbital Hasselblad of it, which is included in Kipp Teague's Project Apollo Archive. - DannyCaes Dec 27, 2007


Ambrosius Aurelius Theodosius; Roman writer (unkn-fl. c. 410).

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