September Apogee Moon Near Jupiter

20sep-apogee_moon    Our Moon orbits around the Sun with the Earth and 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*.

Click on graphic to see it full size.

Click on graphic to see it full size.

   This very thin 28.2-day old waning crescent Moon shows only about 11% of its disk and rises before sunrise local time. Given its thin crescent shape it may not be noticed. However the thin Moon will be in conjunction with the planet Jupiter, coming within a few degrees from Jupiter. And the two should make a striking pair. This waning crescent Moon reaches apogee this month on Saturday September 20th at 9 am CDT (14 UT). At that time the Moon will more or less be at a distance of 31.85 Earth diameters (405,845 km or 252,180 miles) from the Earth.

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

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.

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