Today’s Astronomical Events – July 23rd, 2015

The nearly first quarter Moon passes close by Spica, the brightest star in the constellation Virgo tonight. Observers in Australia get an added bonus as both Venus and Jupiter remain visible for some time after sunset.

(Click on the image to enlarge. Adapted from 2015: An Astronomical Year, available in Kindle and paperback formats from Amazon in the US, Canada and the United Kingdom.)

Map courtesy of Mobile Observatory. Photograph taken by the author using Slooh.

 

 

04:57 UT – Dwarf planet Ceres is at perigee. Distance to Earth: 1.939 AU (Ceres: magnitude 7.3. Microscopium, all night.)

09:08 UT – The nearly first quarter Moon passes Spica. (Naked eye, Virgo, evening sky. See images above.)

09:16 UT – Mercury reaches its maximum brightness. Magnitude: -2.1 (99% illuminated, diameter 5.0”. Cancer, not visible)

19:24 UT – Mercury is at superior conjunction with the Sun. Distance to Earth: 1.337 AU (100% illuminated, magnitude -2.1, diameter 5.0”. Cancer, not visible)

 

 

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.

2015 An Astronomical Year (Kindle Edition) 2016 An Astronomical Year Paperback Cover 2016 The Night Sky Sights The Astronomical Almanac 2015-2019

2015: An Astronomical Year

2016: An Astronomical Year 2016: The Night Sky Sights The Astronomical Almanac (2015-2019) The Amateur Astronomer’s Notebook (Pocket Edition)

(Kindle & Paperback)

(Kindle & Paperback) (Kindle & Paperback) (Kindle & Paperback)

(Paperback)

Amazon – US

Amazon – US Amazon – US Amazon – US Amazon – US
Amazon – UK Amazon – UK Amazon – UK

Amazon – UK

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” gmail.com

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