August Moon at Perigee

aug30-perigee-moon   The Moon reaches perigee, (minimum distance from Earth), this month on Sunday August 30th. At that time the Moon will more or less be at a distance of 28.9 Earth diameters (358,288 km or 222,630 miles) from the Earth.
   Does our Moon actually go around the Earth as this graphic shows? From our perspective on the Earth the Moon appears to circle around the Earth. However, in reality, the Moon orbits the Sun together with the Earth*

   The 16.5-day old waning gibbous Moon is just past full phase and is lined up with the left side the Square of Pegasus, an asterism formed with three stars from the constellation Pegasus the Winged Horse, and one star from the constellation Andromeda the Princess.

   *Click here to read my 2006 Scope on the Sky column “The Real Shape of the Moon’s Orbit”. (PDF)

   Read this very informative article about the Earth-Moon system and their orbital motions, written by Joe Hanson. “Do We Orbit the Moon?”

   
   
   
Caution: Objects viewed with an optical aid are further than they appear.
   Click here to go to the Qué tal in the Current Skies web site for more observing information for this month.

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