[AZ-Observing] Re: Asteroid occultation Friday night

Paul, "Guide" list the star as 11.6 also and the asteroid at 10.6.  I know
from recent experience that anything dimmer than around 10.5 is impossible
to see from my house in the north Tempe area, due mostly to light pollution.
Randy Peterson

----- Original Message -----
From: "Paul Dickson" <dickson@xxxxxxxxxxxxxxxxx>
To: <az-observing@xxxxxxxxxxxxx>
Sent: Friday, October 11, 2002 2:01 PM
Subject: [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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>


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