From The Moon
Jump to: navigation, search

Al-Khwarizmi - aka Arabia

Lat: 7.1°N, Long: 106.4°E, Diam: 65 km, Depth: km, Rükl: (farside), Nectarian

LROC . Al-Khwarizmi at center, satellite J at lower right


LPOD Photo Gallery Lunar Orbiter Images Apollo Images

  • AS17-147-22462 shows Apollo 17's CSM America above the bright crater Al-Khwarizmi K (above and left of centre) and Firsov T (lower left corner). This photograph is one in a series which show the interior of the Service Propulsion System's bell (the SPS-bell at the rear of the CSM's Service Module). The preceding photographs in this series show the rotation of CSM America.
  • Other fine (oblique) close-ups of the bright crater Al-Khwarizmi K are Apollo 11's AS11-42-6282 and AS11-43-6349.
  • Close up of Al-Khwarizmi itself in Apollo 16's panoramic ITEK-camera magazine REV 47 (Forward Facing Camera): frames AS16-P-5034, 5036, 5038, 5040, 5042.
  • The whole of Al-Khwarizmi was captured near the central part of Apollo 16's ITEK-camera frame AS16-P-5530 (made during TEC; Trans Earth Coast).
  • Additional research orbital Apollo photographs: Danny Caes


(LAC zone 64C2) USGS Digital Atlas PDF


Description: Wikipedia


Additional Information


  • Named for Muhammad ibn Musa al-Khwarizmi (c.780 - c. 825), a Persian mathematician, astronomer, astrologer and geographer. His Algebra was the first book on the systematic solution of linear and quadratic equations. Consequently he is considered to be the father of algebra, a title he shares with Diophantus. The English word "algorithm" is a corruption of his Arabic name.
  • Erroneously called Al-Khwartzimi in Charles J. Byrne's The Far Side of the Moon; a Photographic Guide (Springer, 2008).
  • This name was officially proposed (and claimed to be accepted) by Farouk El-Baz in an article appearing in the journal Science in 1973. The feature to which he attached this name was a multi-ringed basin centered at 1°N/112°E and 500 or possibly 1000 km in diameter; extending roughly from Saenger to Necho (another feature newly named in the article) and from Pasteur to beyond King.
  • Al-Khwarizmi was among the crater names approved "as assigned on the moon" in IAU Transactions XVIB (1976), however the position was given as 7.0°N, 107.0°E, an apparent reference to the present crater rather than to the larger impact basin described by El-Baz.
  • The crater which is officially named Al-Khwarizmi (IAU) was informally known as Arabia during the Apollo program (see: Apollo 17 Preliminary Science Report).
  • Running near Saenger, Al-Khwarizmi, and Lobachevskiy, from 0° North/ 104° East to 10° North/ 111° East, is a surface formation which was informally called "Rupes Appalaches" in the APOLLO 17 PRELIMINARY SCIENCE REPORT.

LPOD Articles