Today’s Astronomical Events – August 9th, 2015

Equuleus the Foal can be found just to the west of Pegasus, the Flying Horse and is the second smallest constellation (after Crux, in the southern hemisphere) in the entire night sky. It’s also one of the faintest as it contains no bright stars, making it difficult to see from suburban skies. However, if you can find Altair, the brightest star in Aquila the Eagle and then locate Delphinus to the north-east, you may be able to spot Equuleus nearby.

It’s a barren constellation, devoid of any interesting deep sky objects, such as open or globular star clusters, nebulae or galaxies, but there are two doubles worth a quick look. The brighter (and more easily found) is Gamma Equulei, a pair of wide stars easily seen in binoculars. The brightest (primary) is white and about twice as bright as the fainter (secondary) star, which appears bluish.

Telescope owners can also try their hand at 1 Equulei, a fainter star found to the south-west. A medium magnification of about 100x should easily split this star into its two yellow-white components. The primary is itself a double but that pair is currently too close to be separated by small telescopes on Earth.

(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.

 

 

22:52 UT – Jupiter appears 0.4° north of Regulus. (Jupiter: magnitude -1.7, diameter 30.9”. Leo, not visible.)

Venus fades to magnitude -4.0 (2% illuminated, diameter 56.6”. Leo, not visible.)

The constellation Equuleus (the Foal) culminates at midnight tonight. (Naked eye, all night. 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.

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

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

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s