Mars and Jupiter – A Close Pair for Early Risers

October 17th, 2015

The dance of the planets continues in the pre-dawn sky as Mars and Jupiter form a close pair in the twilight. With the distance between them being less than the width of a full Moon, this is an excellent opportunity to witness an event that only occurs once every couple of years. In fact, if you miss it, you’ll have to wait until January 6th 2018 to catch the planets again in the pre-dawn sky. As a consolation, on that date they’ll be even closer with just half the distance separating them. (And it’ll be a Saturday on that date too!)



All Astronomical Events for October 17th, 2015

01:55 UT – The waxing crescent Moon passes Antares. (Naked eye, Scorpius, evening sky.)

13:44 UT – Mars appears 23’ north of Jupiter. (Mars: 96% illuminated, magnitude 1.7, diameter 4.1”. Jupiter: magnitude -1.8, diameter 32.1”. Naked eye, Leo, pre-dawn sky. See images 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. Night sky simulations created using Mobile Observatory for Android devices.

2015 An Astronomical Year (Kindle Edition) 2016 An Astronomical Year Paperback Cover 2016 The Night Sky Sights The Astronomical Almanac 2015-2019 Kindle Cover - Deep Sky Observer's Guide

2015: An Astronomical Year

2016: An Astronomical Year 2016: The Night Sky Sights The Astronomical Almanac (2015-2019) The Deep Sky Observer’s Guide

(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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