Hi Dave,

You can see this star in A2.0 or UCAC-2 or CMC-14. Not
surprisingly, it's missing from GSC; that catalog is
disappointing, at best, when it comes to double and
multiple stars. That's especially so in cases such as
this, where the companion is a bit fainter than its
neighbors.

If you click on Extras... DSS/RealSky Images, and ask
Guide to download an image for this star from POSS1 (either
red or blue), you can clearly see three separate stars.
Those were the images used for A2.0. The magnitude looks
a bit faint, but it certainly nailed the star.

Ask Guide to get an image from DSS-1, and you see a
big connected blob, with haloes around the brighter pair.
That's the image used for the GSC. You can see why GSC
just couldn't puzzle out the real nature of this system.
A human eyeball can sort of see there's a third star,
but the software used to create GSC would have been hard
pressed to "see" it.

UCAC-2 and CMC-14 were CCD-based surveys and had no
trouble whatsoever in seeing what was going on. UCAC-2
even matched the fainter star to the its older A2.0
position, so it determined a proper motion (one that
matches the two brighter stars, making it almost certain
that this is a for-real three-star system.)

-- Bill