The following stats are for 45 degrees north latitude, Daylight Savings Time. On 9-21 it will be about 6 degrees above the horizon, just north of east, at 5:20 AM. 2 weeks later it will be 14 degrees above the eastern horizon at the same time.
Jupiter will reach opposition (and midnight culmination) around March 5, 2004.
Jupiter is the fifth planet from the Sun and by far the largest. It is more than twice as massive as all the other planets combined (318 times Earth).
orbit: 778,330,000 km (5.20 AU) from Sun
diameter: 142,984 km (equatorial)
mass: 1.900e27 kg
Jupiter has 61 known satellites (as of May 2003): the four large Galilean moons, 34 smaller named ones, plus many more small ones discovered recently but not yet named.
Cassini saw Jupiter from outside its orbit: something Earthbound observers will never see.
Jupiter in crescent phase: