The Moon Amongst the Pre-Dawn Planets

October 9th, 2015

Yesterday the waning crescent Moon began to encroach upon the early morning planets and appeared close to Regulus and Venus. This morning it’s moved a little further along and is now nicely nestled amongst the group. Take some time to look as you’ll also be able to enjoy Earthshine illuminating the Moon’s darkened surface.

For those in Australia, there’s an added bonus, especially if you live on the western coast of the country. This month marks a rare occasion as Venus is occulted by the Moon. In other words, if you get up early enough, you’ll get so see the planet disappear behind the Moon and then re-appear a little over an hour later. The exact timings will vary, but you can find out more here.



All Astronomical Events for October 9th, 2015

18:21 UT – The waning crescent Moon passes Mars. (Mars: 97% illuminated, magnitude 1.8, diameter 4.0”. Naked eye, Leo, pre-dawn sky. See image below.)

06:29 UT – Venus appears 2.6° south of Regulus. (Venus: 41% illuminated, magnitude -4.5, diameter 29.4”. Naked eye, Leo, pre-dawn sky.)

18:41 UT – Asteroid 3 Juno reaches apogee. Distance to Earth: 3.946 AU (Juno: magnitude 10.8. Virgo, not visible.)

22:58 UT – The waning crescent Moon passes Jupiter. (Jupiter: magnitude -1.7, diameter 31.7”. Naked eye, Leo, pre-dawn sky. See image below.)

Good opportunity to see Earthshine on the waning crescent Moon before sunrise. (Naked eye, Leo, pre-dawn sky.)

The constellations Andromeda (the Princess) and Cassiopeia (the Queen) culminate tonight. (Naked eye, 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.

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. Vesta image courtesy NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

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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