Venus and Mars Slowly Converge in the Pre-Dawn Sky

September 2nd, 2015

For several months now, there’s been a lack of planets in the sky as Mercury, Venus, Mars and Jupiter have been too close to the Sun for easy observation. Only Saturn has remained, low over the south-western horizon, but even the jewel of the solar system is slowly succumbing to the Sun.

Now, however, the tide is turning in our favor as both Venus and Mars are gradually emerging from the pre-dawn twilight and will be joined by Jupiter later in the month. Venus and Mars will be at their closest in early November, but in the meantime, early risers will have the opportunity to watch these worlds dance.

This is the first of several for September. Come back on the 10th as the pair are joined by the Moon and return on the 24th to see Mars very close to the bright star Regulus.



All Astronomical Events for September 2nd 2015

17:50 UT – Venus passes Mars. Separation: 8.7° (Venus: 10% illuminated, magnitude -4.4, diameter 50.6”. Mars: 98% illuminated, magnitude 1.8, diameter 3.7”. Naked eye, Cancer, pre-dawn sky. See 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.

Astronomical events taken from 2015: An Astronomical Year, available in Kindle and paperback formats from Amazon in the US, Canada and the United Kingdom.

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

2015: An Astronomical Year

2016: An Astronomical Year 2016: The Night Sky Sights The Astronomical Almanac (2016-2020) The Amateur Astronomer’s Notebook (Pocket Edition)

(Kindle & Paperback)

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


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