Today’s Astronomical Events – January 11th, 2015

Mercury and Venus continue to shine above the south-western horizon after sunset. Observe the pair over consecutive nights to see fleet-footed Mercury dance around it’s slower sister planet.

(Click on an image to enlarge.)

Images Courtesy of Mobile Observatory.



01:00 UT – Conjunction of Mercury and Venus. Separation: 38.5′. (Mercury: illumination 71%, magnitude -0.7, diameter 6.2”. Venus: 95% illuminated, magnitude -3.9, diameter 10.5”. Capricornus, evening sky. See image above.)

07:39 UT – Summer begins in the southern hemisphere of Mars. (95% illumination, magnitude 1.1, diameter 4.6”. Aquarius, evening sky.)



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

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


Learn more about every upcoming astronomical event in 2015 An Astronomical Year (Kindle eBook) and The Astronomical Almanac (2015-2019) (Kindle eBook) and The Astronomical Almanac (2015-2019) (Paperback 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.


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