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Lat: 69.4°N, Long: 50.9°W, Diam: 59 km, Depth: 4.17 km, Rükl: 2, Eratostenian

external image normal_Carpenter_LO-IV-176H.JPG


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Description: Wikipedia


Additional Information

  • Depth data from Kurt Fisher database
    • Westfall, 2000: 4.17 km
    • Viscardy, 1985: 2.6 km
    • Cherrington, 1969: 3.1 km
  • Based on the shadows in LO-IV-176H, LTVT estimates an eastern rim height of up to 4,800 m. - JimMosher
  • Measures on LRO QuickMap give depth about 4.2 km
  • Central peak height
    • Based on the shadows in LO-IV-176H, LTVT estimates central peak heights of 650-800 (western peak) and 980 m (eastern peak). - JimMosher
  • Measures on LRO QuickMap give max central peak height about 1 km
    • Sekiguchi, 1972: 1.0 km "A large mountain block on which several peaks are perceived"
      • 0.5 km "According to photographs of the Lunar Orbiter IV, there is another small mountain behind [the central peak] which is not visible from the earth." - fatastronomer
  • Included in ALPO list of bright ray craters
  • Stratigraphy changed from Copernican to Eratostenian based on Galileo data and crater counts (McEwen et al, 1993)
  • TSI = 35, CPI = 25, FI = 20; MI =80 Smith and Sanchez, 1973
  • 90-98% anorthosite in central peak, and 0.2 to 0.4 Maturity Index (not mature) Ohtake and others, 2009


  • The name of this crater honors two men:
  • According to Mary Blagg's Collated List (1913), this crater was known to her three authorities as Anaximander b (catalog number 1692). The modern name that was adopted by the IAU in its original Named Lunar Formations (1935 -- apparently honoring James Carpenter), was introduced on a lunar map published by Gaudibert and Fenet in 1887 (Whitaker, p. 150). - JimMosher
  • E. F. Carpenter was added as a second honoree in 1985 (IAU Transactions XIXB). (He was professor of Astronomy at Univ of Az when I became an undergraduate there - he allowed me to use the small telescopes for observing!) - tychocrater Sep 13, 2009
  • Maybe we could add Malcolm Scott Carpenter too (1925-2013); American test pilot, astronaut, and aquanaut. Second American in orbit around earth, after John Glenn. - DannyCaes Oct 25, 2014

LPOD Articles

Two Carpenters