Flamsteed-Billy Basin

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Flamsteed-Billy Basin

(unofficial name)

Lat: 7°S, Long: 45°W, Main ring diam: 570 km, Depth: km, Rukl: 40

external image normal_Flamsteed-Billy_Basin_LIDAR_LTVT.JPG

external image normal_flamsteed-billy.jpg

Left: Clementine LIDAR Altimeter texture from PDS Map-a-Planet remapped to north-up aerial view by LTVT. The red dot is the central position and the white circle the main ring position from Chuck Wood's Impact Basin Database. Grid spacing = 10 degrees.
Right: LROC WAC image Centred on 0 degrees lunar longitude.


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(LAC zone 75A4)

Basin Classification

(description of terms and most numeric basin data from Wood, C.A. (2004) Impact Basin Database)

Certainty of Existence
Wilhelms Age Group
Ring Diameters
Mare Thickness
320, 570 km


Additional Information

Quite large circle-shaped formation southwest of the Flamsteed P ring
What seems to be a circle-shaped formation southwest of the Flamsteed P ring is an arrangement of wrinkle ridges, more-or-less... well... circle shaped (see SLC-map F5). Is it perhaps part of the remains of the Flamsteed-Billy impact basin? - DannyCaes Feb 4, 2017


Basins filled with maria are named for the mare, and basins that were previously recognized as craters still bear the crater name. Basins located between craters have the names of the two opposite craters with a hyphen in between, in this case Flamsteed and Billy.

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