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    Re: Arcturus- what is the arc diameter from Earth?
    From: Gary LaPook
    Date: 2015 Aug 7, 02:16 +0000
    0.00650 inches, about 6 one-thousandths of an inch.

    ((1.767 x 10^7  km x 2) / 3.472 x 10^14  km ) x 5280 feet per mile X 12  inches per foot = 0.00650 inches.

    gl


    From: Samuel L <NoReply_SamuelL@fer3.com>
    To: garylapook---.net
    Sent: Thursday, August 6, 2015 1:51 PM
    Subject: [NavList] Re: Arcturus- what is the arc diameter from Earth?

    Peter,
    Using your math skill can you give me a scale example of that size? That is, for example; "if Arcturus were 1 mile away it would appear to be 1/16" of an inch in diameter".
    What do you think?
    Thanks,

    Sam


     
     
    Arcturus is 36.7 light years (3.472 x 10^14 kilometers) from Earth and has a radius of 1.767 x 10^7 kilometers, which I work out to be a semidiameter of 0.013".


       
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