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(formerly Gioja A)

Lat: 85.3°N, Long: 9.8°E, Diam: 93 km, Depth: 1.38 km, Rükl: 4, pre-Nectarian

external image normal_Byrd_LO-IV-190H.JPG
LO-IV-190H Byrd is the large crater at center, with the smaller Gioja at the bottom, to the left of center.


LPOD Photo Gallery Lunar Orbiter Images


(LAC zone 1A4) USGS Digital Atlas PDF


Description: Wikipedia


Additional Information

  • Depth data from Kurt Fisher database
    • Westfall, 2000: 1.38 km
    • Cherrington, 1969: 2.59 km
  • In LO-IV-190H, the shadows from Gioja (to the south) drop about 2,150 m onto the floor of Byrd. The ridge on the east rises about 2,500 above the terrain at its shadow's tip. - Jim Mosher


  • Named for Rear Admiral Richard Evelyn Byrd, USN (October 25, 1888 – March 11, 1957), a pioneering American polar explorer and famous aviator. By the time Byrd died he had amassed twenty-two citations and special commendations, nine of which were for bravery and two for extraordinary heroism in saving the lives of others. As well he earned the Medal of Honor, the Congressional Life Saving Medal, the Navy Distinguished Service Medal, the Distinguished Flying Cross, the Navy Cross and three ticker-tape parades.
  • The name Gioja A was inserted as Catalog number 1018a in the original IAU nomenclature of Named Lunar Formations.
  • Wilkins and Moore proposed the replacement name Shackleton for Gioja A but the IAU did not accept that name, assigning it instead to a crater at the moon's SOUTH pole!
  • The replacement name Byrd was given by Arthur and Whitaker in the Rectified Lunar Atlas (1963) and approved by the IAU in 1964.

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