Ashbrook(formerly Drygalski Q)
|Lat: 81.4°S, Long: 112.5°W, Diam: 156 km, Depth: km, Rükl: (farside)|
Clementine The floor of Ashbrook (center) is overlain by a massive flow from neighboring 149-km Drygalski (on the right). The shadowed 30-km diameter crater atop the pile of rubble is Drygalski P. The many craters, large and small, to the south of Ashbrook are not named.
- Drygalski P was one of the last readily-identifiable features photographed by Japan's Kaguya spacecraft as it flew one last time through the terminator on its way to its impact on June 10, 2009.
- Named for Joseph Ashbrook (1918-1980), an American astronomer and long time editor of the amateur astronomy magazine Sky and Telescope.
- This name was actually proposed to the IAU by amateurs as part of their Luna Incognita project to fill in areas left blank on the Lunar Orbiter maps. It was approved in 1994 (IAU Transactions XXIIB).
- Although listed in the IAU Planetary Gazetteer as replacing the former lettered crater designation Drygalski Q, that name was actually part of Ewen Whitaker's effort to letter the farside for NASA RP-1097 (1982) and was never approved by the IAU.
Alan M. MacRobert. Exploring the Moon's South Pole, Sky and Telescope, October, 1993, pages 66-67.
Joseph Ashbrook in the Sourcebook Project (William R. Corliss)
- In Tornados, Dark Days, Anomalous Precipitation, and related weather phenomena (1983) :
- Darkness at Noon (Sky and Telescope, 1964) (the mystery of the dark days)
- In Mysterious Universe, a handbook of astronomical anomalies (1979) :
- The Many Moons of Dr. Waltemath (Sky and Telescope, 1964)
- W. H. Pickering and the Satellites of Jupiter (Sky and Telescope, 1963)
- Barnard's "Unexplained Observation" (Sky and Telescope, 1956)
- Christopher Scheiner's observations of an object near Jupiter (Sky and Telescope, 1971)