The May Perigee Moon

may18-perigee    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*.
   The 8.8 day old waning gibbous Moon reaches perigee this month on Sunday 18 May at 12:04 UT (7:04 am CDT). At that time the Moon will more or less be at a distance of 28.78 Earth diameters (366,714 km or 227,880 miles) from the Earth.

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

Click on graphic to see it full size.

Click on graphic to see it full size.

   Sunday morning the waning gibbous Moon is within the boundaries of the constellation Sagittarius the Archer however the reflected light from the just past full Moon drowns out most of the stars nearby.

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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