Anton Swanepoel Books Anton Swanepoel Anton Swanepoel Google Plus
Home Biography Free Stuff Download Center Videos Contact Subscribe to newsletter

If you enjoy my blog and would like to help with its upkeep, or found the information on this website informative, please buy me a cup of coffee.
Thank you.














Quick Links:

Sun, Moon, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, More Planets, Comets

Jupiter is the planet of faith, positivism and optimism. It rules Sagittarius and is exalted in Cancer. Jupiter represents the principle of expansion, versus contraction (as represented by Saturn) and the aspirations of the higher self. Its position in the chart indicates how your faith will be expressed, and what modes of activity will stimulate self-confidence.



The most massive planet in our solar system, with four large moons and many smaller moons, Jupiter forms a kind of miniature solar system. Jupiter resembles a star in composition. In fact, if it had been about 80 times more massive, it would have become a star rather than a planet. On January 7, 1610, using his primitive telescope, astronomer Galileo saw four small "stars" near Jupiter. He had discovered Jupiter's four largest moons, now called Io, Buropa, Ganymede , and Callisto. These four moons are known today as the Galilean satellites. Newly discovered moons of Jupiter are reported by astronomers and acknowledged with a temporary designation by the International Astronomical Union; once their orbits are confirmed, they are included in Jupiter's large moon count. Including the "temporary" moons, Jupiter has 62 total.

Planet Mass (10x24 kg) Volume (10x10 km3 Equatorial radius (km) Polar radius (km) Mean density (kg/m3) Surface gravity (m/s2) Surface acceleration (m/s2) Escape velocity (km/s)
Jupiter 1,898.6 143,128 71,492 66,854 1,326 24.79 23.12 59.5
Earth 5.9736 108.321 6378.1 6356.8 5515 9.80 9.78 11.2
Name Orbital Period Sidereal rotation
Jupiter 11,87 Years 9,925 Hours


Discoverer: Unknown
Discovery Date: Prehistoric
Distance from Earth
Minimum (10x6 km) 588.5
Maximum (10x6 km) 968.1
Apparent diameter from Earth
Maximum (seconds of arc) 50.1
Minimum (seconds of arc) 29.8
Mean values at opposition from Earth
Distance from Earth (10x6 km) 628.76
Apparent diameter (seconds of arc) 46.9
Apparent visual magnitude -2.7
Maximum apparent visual magnitude -2.94

Surface Pressure: >>1000 bars
Temperature at 1 bar: 165 K (-108 C)
Temperature at 0.1 bar: 112 K (-161 C)
Density at 1 bar: 0.16 kg/m3
Wind speeds Up to 150 m/s
(<30 degrees latitude) Up to 40 m/s (>30 degrees latitude)
Scale height: 27 km
Mean molecular weight: 2.22 g/mole
Atmospheric composition (by volume, uncertainty in parentheses)
Molecular hydrogen (H2) - 89.8% (2.0%)
Helium (He) - 10.2% (2.0%)
Minor (ppm):
Methane (CH4) - 3000 (1000)
Ammonia (NH3) - 260 (40)
Hydrogen Deuteride (HD) - 28 (10)
Ethane (C2H6) - 5.8 (1.5)
Water (H2O) - 4 (varies with pressure)
Ammonia ice, water ice, ammonia hydrosulfide

Technical Information courtesy of Nasa

Nasa Link

Quick Links:

Sun, Moon, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, More Planets, Comets