[HD 209458b has a diameter 1.3 times that of Jupiter, and two-thirds the mass. Its orbit is one-eighth the size of Mercury's orbit around the Sun. The parent star is similar to our Sun and lies 150 light-years from Earth. It is visible with binoculars as a seventh magnitude star in the constellation Pegasus. In 1999 this star suddenly entered the astronomical "Hall of Fame" when HD 209458b was seen passing in front of the star and partly eclipsing it. This was the first confirmed transiting extrasolar planet ever discovered. In 2001 Hubble detected the element sodium in the lower part of HD 209458b's atmosphere, the first signature of an atmosphere on any extrasolar planet. ]

From: http://spaceflightnow.com/news/n0303/12planet/ (pc's off the blink and I can't use colons)

At a rate of 3.5 days orbit, four million miles from that sun, 1.3 times the size of our Jupiter. I'd use up my proto-planetary H2O in a flash too. Sun-like star, is it a G-type star? How old is it, approximately?

Interesting that it was one of the first planets to be found. Unfortunately, life-giving properties are being lost.