Today’s Astronomical Events – August 15th, 2015

2015-08-15

Venus is at inferior conjunction today, meaning it passes between the Earth and the Sun in its orbit and is therefore invisible in the sky. The planet will now slip into the pre-dawn sky where it may be seen close to Mars at the end of the month.

Meanwhile, our own Moon was new yesterday and will become visible in the evening over the next few days. Mercury is also escaping the Sun and emerging into the evening twilight. Some keen-sighted observers may even be lucky enough to catch the pair close together shortly after sunset tomorrow.

(Click on an 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.)

Images courtesy of Mobile Observatory.

 

 

02:14 UT – Asteroid 4 Vesta is stationary prior to beginning retrograde motion. (Magnitude 6.5. Cetus, pre-dawn sky.)

09:00 UT – The just-past new Moon passes Regulus. (Leo, not visible.)

12:36 UT – The just-past new Moon passes Jupiter. (Jupiter: magnitude -1.7, diameter 30.8”. Leo, not visible.)

19:24 UT – Venus is at inferior conjunction with the Sun. Distance to Earth: 0.288 AU. (1% illuminated, magnitude -3.9, diameter 57.8”. Leo, not visible.)

The globular star cluster M30 culminates at midnight tonight. (Magnitude 7.7. Capricornus, all night.)

 

 

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

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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