Jupiter’s Moon
Using 70mm Binocular , The star 20 Psc is confusing with Callisto (Both 6th Magnitude and same distance from Jupiter ) but "Io" and "Ganymede" constructs the line which distinguishes "Callisto" as Jupiter's moon ref:
http://www.wolframalpha.com/input/?i=Jupiter+7%3A43+pm+30+DEC+2010+from+hyderabad
For individual stats of Galileo moons