Today’s Astronomical Events – May 12th, 2015

Located in the constellation of Serpens, M5 was discovered by Gottfried Kirch in 1702 and has an estimated diameter of 165 light years, making it one of the largest globular clusters known. Unfortunately, it’s too faint to be seen with just your eyes but can be picked up with binoculars or a small telescope.

(Click on an image to enlarge.)

Images courtesy of Mobile Observatory. 



20:44 UT – The just-past last quarter Moon passes Neptune. (Neptune: magnitude 7.9, diameter 2.2”. Aquarius, pre-dawn sky.)

The globular cluster M5 culminates at midnight tonight. (Magnitude 6.7. Serpens, all night. See images above.)



Events in bold involve objects and/or events that are visible with the naked eye.

All times are in Universal Time (UTC). To convert the time to your timezone, click here.

Learn more about upcoming astronomical events in 2015 An Astronomical Year (Kindle Edition) and The Astronomical Almanac (2015-2019) (Kindle Edition and Paperback Edition) and 2016 An Astronomical Year (North American Kindle Edition.)

The Amateur Astronomer’s Notebook allows astronomers to log 150 observing sessions and includes an appendix of hundreds of suggested deep sky objects.

Details of all available books across the world can be found here or by visiting the author’s page on Amazon.

If you have any comments or questions, please feel free to contact me at astronomywriter “at”


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