Jupiter

Key Points
 

SIZE -  BIG!

Largest Planet
2/3 of total mass in solar system
11x Earth's diameter
318x Earth's mass
gravity 2.5x Earth's (you are not a superhero here!)
 

Revolution

- 12 years - 5 AU
 

Rotation

- ~9 hr 50 min
 

Composition

~85% H, ~15% He, NH3 - ammonia, CH4 - methane
Density - 1.3 g/cm3
No iron core, no crust, metallic H core(?)
 

Appearance

Bands of Color
 

Bright bands - zones - rising gas
Dark band - belts - falling gas


Great Red Spot - most visible feature
 

anticyclone - high pressure
has been observed for 350 years
Flat at top, bulges at the equator due to rapid rotation
Axial tilt - 3o -> no seasons - nice constant weather
 

Satellites

16 it's a mini solar system
Galilean - 4 major

 
 

Io


 

Europa

 
 

Callisto
  
 
 
 

Ganymede

Ganymede is the largest in Solar System

Larger than Mercury
 

Ringed

Energy State

So massive that it is contracting (collapsing) on itself (high pressure)

This gravitational collapse leads to high temperatures so it emits 1.6x more energy than it receives from the sun

It would have needed to be 75x more massive than it is to have become a star

I don't know where the 10x figure comes from