AM-PM Astronomy

Click on graphic to see it full size.

Click on graphic to see it full size.

   Tuesday morning November 4th the innermost planet, Mercury, will be rising above the eastern horizon about 4-5o away from the bluish-white star Spica in the constellation of Virgo the Harvest Maiden. For an interesting comparison between two stars based on temperature look up to the left from Spica and Mercury for a reddish star, Arcturus, in the constellation of Bootes the Herdsman.
   Arcturus is red giant star approximately 37 light years from the Sun and at nearly 35 times the size of the Sun has a surface temperature of 3,833oC. Spica is a blue-white star approximately 2600 light years from the Sun and at nearly 10 times the size of the Sun has a surface temperature of 23,096oC. Both stars are also one of the two stars making up their respective binary system.

4nov-pm   Later that same day the nearly full Moon will be rising a few degrees away from Uranus, the next to outermost of the 8 planets. Uranus is right at the unaided eye limit and is easier seen with some sort of optical aid. In reality since the nearly full Moon is nearby moonlight would brighten the surrounding sky more then enough to make most anything nearby ‘invisible’.
   Uranus is about 14 times larger than our Moon so what would Uranus look like if it was where our Moon is?

   
   
   
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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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