[vsnet-chat 4642] R: Question on V719 Aql

["Toni Scarmato" <toniscarmato@hotmail.com>]

Dear Hitoshi, dear all


> Dear Toni,
> 
> >V719 Aql variable star
> 
> It is EA/SD (Algol-type eclipsing binary, semi-detached) type
> variable.
> 
> >12.2-14.0 GCVS
> 
> These magnitudes are the photographic one (say, a bluer band than
> "eye" band), so it can be much brighter in the other band.
> 
> >the star is at magnitude 10.0.
> 
> What equipment and comparison stars did you use for this measurement?


I Have used Astroart, USNO A2 catalog and the following stars:

USNOA2 195544.494 +072056.22 9.57/0.41
USNOA2 195526.938 +071822.86 9.24/0.41
USNOA2 195536.139 +07153564 9.85/0.41
USNOA2 195552.570 +071456.62 10.58/0.41

The accurate position and magnitude of the centroid of the star is

19 55 29.296
+07 24 58.69

m1~10.085/0.45

very close to this postion there are the stars

USNOA2 195529.626 +072453.75 12.10/0.41
USNOA2 195524.074 +072507.36 15.80/0.25
USNOA2 195530.451 +072446.94 17.30/0.25

Regards,

Toni Scarmato

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