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Peirce - with Swift north of it

Lat: 18.23°N, Long: 53.32°E, Diam: 18.37 km, Depth: 2.16 km, Rükl 26, Eratosthenian

external image normal_peirce.jpg

external image normal_Peirce-Swift_LO-IV-191H_LTVT.JPG

Left: LROC image WAC No. M119503409ME. Calibrated by LROC_WAC_Previewer.
Right: LO-IV-191H Peirce is the larger crater with Swift north of it.


LPOD Photo Gallery Lunar Orbiter Images Apollo Images
WARNING: some orbital Apollo photographs of Peirce are online as "PIERCE" - DannyCaes Aug 27, 2013


(LAC zone 44D4) LAC map Geologic map LTO map



(IAU Directions) PEIRCE.--This formation, smaller than Picard, is also prominent, its border being very bright. There is a central peak, which, though not an easy object, I once glimpsed with a 4 inch Cook achromatic, and have seen it two or three times since with an 8 1/2 inch Calver reflector. A small crater, detected by Schmidt, which I once saw very distinctly under evening illumination, stands on the floor at the foot of the E. wall. Peirce A, a deeper formation, lies a little N. of Peirce, and has also, according to Neison, a very slight central hill, which is only just perceptible under the most favourable conditions. Schmidt appears to have overlooked it.



Additional Information

  • IAU page: Peirce
  • Depth data from Kurt Fisher database
    • Pike, 1976: 2.16 km
    • Westfall, 2000: 2.16 km
    • Viscardy, 1985: 1.8 km
    • Cherrington, 1969: 1.7 km

Lunar Ellipse of Fire

Peirce and Picard (south of Peirce) are (or were?) both number ten in the list of 12 localities in the Lunar Ellipse of Fire
(see article from Farouk El-Baz in Sky and Telescope - June 1973).


  • Named for Benjamin Peirce (pronounced purse), April 4, 1809 – October 6, 1880), an American mathematician and astronomer who taught at Harvard University for forty years. He made contributions to celestial mechanics, number theory, algebra, and the philosophy of mathematics.
  • Peirce B (the I.A.U.'s Swift) was called Graham by Wilkins and Moore, but the I.A.U. did not accept that name. Graham was a 19th century English astronomer.
  • It's perhaps interesting to add Charles Sanders Peirce (1839-1914; American philosopher, logician, mathematician, and scientist).- DannyCaes Jul 24, 2014

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