Jupiter Joins the Pre-Dawn Planets

September 15th, 2015

For the past few months there’s been an absence of visible planets in the evening and pre-dawn skies; fortunately, that’s about to change. Jupiter is now slowly escaping the glare of the Sun’s light and is edging over the pre-dawn eastern horizon.

There it joins Mars and Venus as they dance around the constellation of Leo, the Lion. Observers in North America may get the best view of the planets while those in Australia might find it difficult to see anything but Venus. Wherever you are, Jupiter may be a challenging sight and you’ll need a good, unobstructed view of the horizon to stand a chance of spotting it. Using binoculars will also certainly help.


All Astronomical Events for September 15th, 2015

04:16 UT – Dwarf planet Ceres is stationary prior to resuming prograde motion. (Magnitude 7.9. Sagittarius, evening sky.)

04:44 UT – The waxing crescent Moon passes Mercury. (Mercury: 34% illuminated, magnitude 0.7, diameter 8.6”. Virgo, 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.

Astronomical events taken from 2015: An Astronomical Year, available in Kindle and paperback formats from Amazon in the USCanada and the United Kingdom. Sky simulations created using the Mobile Observatory app for Android devices.

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” gmail.com


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