[AZ-Observing] Re: Asteroid occultation Friday night

On Fri, 11 Oct 2002 04:19:47 -0700, Joe Macke wrote:

> I added a pair of finder charts to my web page at:
> http://www/azmackes.net
> 
> 
> I have conflicting information about the subject star.  The
> occultation prediction software identifies the star as magnitude
> 10.6 A+04 0089, while IOTA (and Thad) say it's TYC0006-00219-1
> (which may be the same), but magnitude 11.6.
> 
> I thought 10.6 would be challenging from the Peoria metro area, but
> 11.6 may be impossible.  We'll see.

From the Tycho-2 database:

    0006 00219 1
        RA      = 7.33976950 deg
        DEC     = 4.23722751 deg
        Mag(BT) = 12.564
        Mag(VT) = 11.707

    V   = VT -0.090*(BT-VT)
    B-V = 0.850*(BT-VT)

    V = 11.707-0.09*(12.564-11.707)
      = 11.707-0.09*(0.857)
      = 11.707-0.07713
      = 11.6



        -Paul

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