https://mywikibiz.com/index.php?title=Jupiter&feed=atom&action=historyJupiter - Revision history2024-03-28T17:26:14ZRevision history for this page on the wikiMediaWiki 1.35.3https://mywikibiz.com/index.php?title=Jupiter&diff=63298&oldid=prevMyWikiBiz: Jupiter information from Jet Propulsion Laboratory2008-03-23T04:07:02Z<p>Jupiter information from Jet Propulsion Laboratory</p>
<p><b>New page</b></p><div>Jupiter Diameter: 142,984 km, 11 Earth diameters<br />
Planetary Mass: 1.89x1027 kg, 317.8 Earth masses<br />
Average Distance from Sun: 778 million km, 5.203 AU (astronomical units)<br />
Length of Day: 9 hours 55 minutes<br />
Length of Year: 11.86 Earth years<br />
How many moons does Jupiter have?: 39<br />
Planetary ring system: Yes<br />
Average temperature: ~165 K (-108 C)<br />
Atmospheric composition: Mostly Hydrogen and Helium.<br />
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AU stands for astronomical unit.<br />
One AU is the average distance from the center of the Earth to the center of the Sun: 149,597,870 km<br />
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Facts about Jupiter's Moons<br />
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Jupiter<br />
Mass (1024 kg) 1,898.6<br />
Volume (1010 km3) 143,128<br />
Radius (1 bar level) (km)<br />
Equatorial 71,492<br />
Polar 66,854<br />
Ellipticity 0.06487<br />
Mean density (kg/m3) 1,326<br />
Gravity (eq., 1 bar) (m/s2) 23.12<br />
Escape velocity (km/s) 59.5<br />
Number of natural satellites 39 Facts about Jupiter's Moons<br />
Planetary ring system Yes<br />
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Jupiter Orbital parameters<br />
Semimajor axis (106 km) 778.57<br />
Sidereal orbit period (days) 4,332.589<br />
Perihelion (106 km) 740.52<br />
Aphelion (106 km) 816.62<br />
Synodic period (days) 398.88<br />
Orbit inclination (deg) 1.304<br />
Orbit eccentricity 0.0489<br />
Sidereal rotation period (hours) 9.9250*<br />
Length of day (hrs) 9.9259<br />
Obliquity to orbit (deg) 3.13<br />
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Semimajor axis (106 km) Mean distance from the Sun (or other central body in the<br />
case of satellites) from center to center in 10^6 kilometers<br />
Sidereal orbit period (days) The time it takes the body to make one revolution about<br />
the Sun relative to the fixed stars in days.<br />
Synodic period (days) The time interval between similar configurations in the<br />
orbit (e.g. opposition) of the body and Earth, in days.<br />
Perihelion (106 km) The point in a body's orbit closest to the<br />
Sun, in 10^6 kilometers.<br />
Aphelion (106 km) The point in a body's orbit furthest from<br />
the Sun, in 10^6 kilometers.<br />
Orbit inclination (deg) The inclination of the orbit to the ecliptic, in degrees.<br />
For satellites, this is with respect to the planet's<br />
equator.<br />
Orbit eccentricity A measure of the circularity of the orbit, equal to<br />
(aphelion - perihelion distance)/(2 x semi-major axis)<br />
For a circular orbit, eccentricity = 0.<br />
Sidereal rotation period (hrs) The time for one rotation of the body on its axis<br />
relative to the fixed stars, in hours. A minus sign<br />
indicates retrograde rotation.<br />
Length of day (hrs) The average time in hours for the Sun to move from the<br />
noon position in the sky at a point on the equator back<br />
to the same position, on Earth this defines a 24 hour day.<br />
Obliquity to orbit (deg) The tilt of the body's equator relative to the body's<br />
orbital plane, in degrees.<br />
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* System III (1965.0) coordinates <br />
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Jupiter Observational Parameters<br />
Discoverer: Unknown<br />
Discovery Date: Prehistoric<br />
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Distance from Earth<br />
Minimum (106 km) 588.5<br />
Maximum (106 km) 968.1<br />
Apparent diameter from Earth<br />
Maximum (seconds of arc) 49.0<br />
Minimum (seconds of arc) 29.8<br />
Mean values at opposition from Earth<br />
Distance from Earth (106 km) 628.76<br />
Apparent diameter (seconds of arc) 46.9<br />
Apparent visual magnitude -2.7<br />
Maximum apparent visual magnitude -2.94<br />
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Jovian Atmosphere<br />
Surface Pressure: >>1000 bars<br />
Temperature at 1 bar: ~165 K (-108 C)<br />
Temperature at 0.1 bar: ~112 K (-161 C)<br />
Density at 1 bar: ~0.16 kg/m3<br />
Wind speeds<br />
Up to ~150 m/s (<30 degrees latitude)<br />
Up to ~40 m/s (>30 degrees latitude)<br />
Atmospheric composition (by volume, uncertainty in parentheses)<br />
Major: Molecular hydrogen (H2) - 89.8% (2.0%); Helium (He) - 10.2% (2.0%)<br />
Minor (ppm): Methane (CH4) - 3000 (1000); Ammonia (NH3) - 260 (40);<br />
Hydrogen Deuteride (HD) - 28 (10); Ethane (C2H6) - 5.8 (1.5);<br />
Water (H2O) - ~4 (varies with pressure)<br />
Aerosols: Ammonia ice, water ice, ammonia hydrosulfide</div>MyWikiBiz