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    Re: Pointer star question
    From: Brad Morris
    Date: 2013 Feb 4, 23:15 -0500

    Hi Norm

    I just checked.  Yes, its a typo.  Thanks for correcting that.

    Brad

    On Feb 4, 2013 8:43 PM, "Norm Goldblatt" <ngold@pacbell.net> wrote:

    The original question- distance between Polaris and Marak has been so instructive. I've used several ephemerides. My Starry Night is quite convenient and I got almost the same answer as Brad did as long as I used J2000. (Brad, I got Merak SHA as 194.5395 compared to your 194.5359. Typo or did I make a mistake?) If I use JNow, the answer is a few seconds different. Can't find much about JNow. I'm assuming it's the up to the minute calendar, taking into effect Earth's wobble-precession, etc. right? What's fascinating to me is that another program Alcyone Ephemeris 4.3 I was looking at shows a drift of about 2-3 seconds every every 24 days. So, if we were really good, we could SEE THE EARTH WOBBLE! Right? Love it.
    I attach a screen shot of a relevant table from Alcyone. Anybody know about this one?
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    Attached File: 122253.alcyone-polaris-merak.jpg

    View and reply to this message: http://fer3.com/arc/m2.aspx?i=122253

       
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