The week of November 4-10 takes us from Lunar Day 3 to Day 9 This week we will highlight the moon crater Janssen, visible on Tuesday night.

Janssen moon craterJanssen is an ancient impact moon crater located in the highland region near the southeastern lunar limb. The entire structure has been heavily worn and is marked by many lesser crater impacts. The outer wall is breached in multiple locations, but the outline of the crater rim can still be observed. The wall forms a distinctive hexagonal shape upon the rugged lunar surface, with a slight curvature at the vertices.

OF ADDITIONAL INTEREST IN SPACE

On Tuesday, the Taurid meteor shower peaks after midnight.
On Sunday night, Saturn is 0.1° south of the Moon. Occultation is visible from southeastern U.S.


Field Map of the Moon, the very finest Moon map available for use at the telescope. It is available for $10.95 at www.skyandtelescope.com and on Amazon. All features mentioned in this blog will be keyed to the grid on the Field Map and will look like this: Plato: [NW/D9]

Credits:
Courtesy of Gray Photography of Corpus Christi, Texas
Lunar photos: NASA / USGS / BMDO / LROC / ASU / DLR / LOLA / Moon Globe. Used by permission

Andrew Planck
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Janssen – Ancient Impact Moon Crater

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