Today’s Astronomical Events – January 23rd, 2015

Australian observers will see the crescent Moon close to Mars tonight; however, for those in the United Kingdom and North America, the Moon has left both Venus and Mars behind and the three worlds now point toward the Sun and Mercury, both hidden below the horizon.

(Click on an image to enlarge.)

Images Courtesy of Mobile Observatory.



01:19 UT – The waxing crescent Moon passes Neptune. (Neptune: magnitude 8.0, diameter 2.2”. Aquarius, evening sky.)

04:03 UT – The waxing crescent Moon passes Mars. (Mars: 96% illuminated, magnitude 1.2, diameter 4.5”. Aquarius, evening sky. See image above.)

Good opportunity to see Earthshine on the waxing crescent Moon after sunset. (Evening sky.)

Mercury fades to magnitude 1.0 (17% illuminated, diameter 8.8”. Capricornus, not visible.)



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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