New Lunar mountain ridge discovered

On November 14, 2009, Maurice Collins discovered a previously unknown mountain ridge on the Moon east of Mare Imbrium using the Kaguya 3D Moon globe

The ridge has not been formally named by the International Astronomical Union at present, but I have nicknamed it "Shannen Ridge" after my daughter Shannen Collins. The ridge appears to be radial to the Imbrium basin (Sea of Rains) and stretches in almost a straight line from the Imbrium rim to near Cepheus crater. More details in the papers below.Shannen Ridge is labeled in the 21st Century Atlas of the Moon by Charles Wood and Maurice Collins, and also in the Photographic Lunar Atlas for Moon Observers by Kwok C. Pau, 2016. It was first publicized on Lunar Photo of the Day website on November 16, 2009, by Chuck Wood, and has also been mentioned in Sky and Telescope Magazine, the Journal of the Association of Lunar and Planetary Observers, Southern Stars - Journal of the Royal Astronomical Society of New Zealand (RASNZ), and in the British Astronomical Associations Lunar Section Circulars, around the time of discovery. I also received the RASNZ's Murray Geddes Prize in 2011 in part for the discovery as well as my other international contributions to lunar science.

Maurice Collins

Palmerston North, New Zealand.

 Below is an article on the discovery of the ridge that was published in the ALPO Strolling Astronomer Journal, Jan 2010.


The original article can be downloaded from: 52-1/JALPO52-1 - Free.pdf

LRO image of the top of Shannen ridge



Oblique view of the ridge (left along terminator). Apennine mountains and Mare Imbrium in foreground.








The discovery of Shannen Ridge featured in the BAA lunar section circulars shown above, and on Lunar Photo of the Day on Nov 16 and Dec 10 2009. I was honoured to see the Ridge discovery was also mentioned in Chuck Woods Exploring the Moon column in Sky & Telescope May 2010 page 51-52 and same article republished in Australian Sky & Telescope magazine July 2010 issue.

Using any of the tools available, for example, the Lunar Terminator Visualization Tool, or the Kaguya 3D Moon globe, you too can take a look at it. Due to the lighting conditions on the Moon, with it running east-west in line with the suns rays, it is difficult to pick out with a telescope. But you pick out the general region where Shannen Ridge is using a telescope. If you don't have access to one, take a look at the image below. While you are looking, take time to explore our wonderful Moon with a telescope, it is like no place on Earth!