Today’s Astronomical Events – June 15th, 2015

Saturn reached opposition – and its best for the year – on May 23rd but is still clearly visible for observation. Binoculars will show a golden horizontal oval shape, caused by the planet’s rings, and it’s largest moon Titan can also be seen by keen-sighted observers. A small telescope will reveal the rings themselves and a number of smaller moons, such as Tethys, Dione, Enceladus and even tiny Mimas.

Close to the ringed planet is a double star, Graffias, which marks one of the claws of Scorpius, the scorpion. A small telescope with low magnification will split it, revealing a pair of white stars. The brighter star (aka, the “primary”) appears two or three times brighter than it’s fainter companion (aka, the “secondary.”)

Lastly, binocular astronomers can console themselves with a nearby pair of stars – Omega 1 and Omega 2 Scorpii. This wide pair of white stars, of almost equal magnitude, appears within the same field of view as Graffias and just a little to the south-east.

(Click on an image to enlarge.)

Images courtesy of Mobile Observatory.

 

 

02:20 UT – The waning crescent Moon passes Mercury. (Mercury: 17% illuminated, magnitude 1.8, diameter 10.1”. Taurus, not visible.)

12:17 UT – The waning crescent Moon passes Aldebaran. (Taurus, 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.

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