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  Source credit: NASA/JPL-Caltech/SwRI/MSSS

Jupiter: Hydrogen Gas Giant

Jupiter is the fifth of nine planets in our solar system and is is one of the outer "gas giant" planets. Jupiter is the largest planet in our solar system and only Venus (and the Moon) are brighter. Jupiter has 79 known moons (maybe up to 600) and is best viewed in the spring.

Jupiter's Great Red Spot and cloud bands are enhanced by viewing though an 80A blue filter.

Jupiter Facts
      1. Mass (kg)
      2. 1.9x1027
      1. Radius (km)
      2. 71,492
      1. Density (gm/cm3)
      2. 1.33
      1. Distance from sun (km)
      2. 778,330,000
      1. Rotational period (hours)
      2. 9.9
      1. Orbital period (years)
      2. 11.871
      1. Orbital velocity (km/sec)
      2. 13.07
      1. Eccentricity of orbit
      2. 0.0483
      1. Tilt of axis (°)
      2. 3.13
      1. Inclination of orbit (°)
      2. 1.308
      1. Surface gravity (m/sec2)
      2. 22.88
      1. Escape velocity (km/sec)
      2. 59.56
      1. Albedo
      2. 0.52
      1. Magnitude
      2. -2.70
      1. Cloud temperature
      2. -121°C
      1. Atmosphere
      2. H=90%, He=10%
      1. Moons
      2. 67


    Rings of Jupiter
        1. Name
        2. Planetary Distance (km)
        3. Shepherd Moon
        1. Halo ring
        2. 92,000 - 122,500
        1. Main ring
        2. 122,500 - 129,000
        3. Adrastea, Metis
        1. Amalthea Ring
        2. 129,000 - 182,000
        3. Amalthea
        1. Thebe Ring
        2. 129,000 - 226,000
        3. Thebe


      Jupiter Surface Map

      Jupiter surface map



      Jupiter vs. Earth Ratios


      diameter = 11.2
      gravity = 2.36
      surface pressure =
      solar irradiance = 0.04
      day = 0.4
      year = 11.9
      sun distance = 5.2
        
      diameter = 1
      gravity = 1
      surface pressure = 1
      solar irradiance = 1
      day = 1
      year = 1
      sun distance = 1




      79 Moons of Jupiter (in order of size)

      The first 4 moons listed, the Galilean moons, are viewable with binoculars and any telescope.