The Planet Jupiter

The Planet Jupiter

  • Submitted By: makn6
  • Date Submitted: 06/02/2010 7:08 PM
  • Category: Science
  • Words: 748
  • Page: 3
  • Views: 470

This article is about the planet. For other uses, see Jupiter (disambiguation).

Jupiter

This image was enhanced by the U.S. Geological Survey to bring out detail. It is based on a 1979 image from the Voyager 1 spacecraft.
Designations
Pronunciation i /ˈdʒuːpɪtər/[1]
Adjective Jovian
Orbital characteristics[2][3]
Epoch J2000
Aphelion 816,520,800 km (5.458104 AU)
Perihelion 740,573,600 km (4.950429 AU)
Semi-major axis 778,547,200 km (5.204267 AU)
Eccentricity 0.048775
Orbital period 4,331.572 days
11.85920 yr
10,475.8 Jupiter solar days[4]
Synodic period 398.88 days[5]
Average orbital speed 13.07 km/s[5]
Mean anomaly 18.818°
Inclination 1.305° to Ecliptic
6.09° to Sun's equator
0.32° to Invariable plane[6]
Longitude of ascending node 100.492°
Argument of perihelion 275.066°
Satellites 63
Physical characteristics
Equatorial radius 71,492 ± 4 km[7][8]
11.209 Earths
Polar radius 66,854 ± 10 km[7][8]
10.517 Earths
Flattening 0.06487 ± 0.00015
Surface area 6.21796×1010 km²[8][9]
121.9 Earths
Volume 1.43128×1015 km³[5][8]
1321.3 Earths
Mass 1.8986×1027 kg[5]
317.8 Earths
1/1047 Sun[10]
Mean density 1.326 g/cm³[5][8]
Equatorial surface gravity 24.79 m/s²[5][8]
2.528 g
Escape velocity 59.5 km/s[5][8]
Sidereal rotation
period 9.925 h[11]
Equatorial rotation velocity 12.6 km/s
45,300 km/h
Axial tilt 3.13°[5]
North pole right ascension 268.057°
17 h 52 min 14 s[7]
North pole declination 64.496°[7]
Albedo 0.343 (bond)
0.52 (geom.)[5]
Surface temp.
1 bar level
0.1 bar
min mean max
165 K[5]
112 K[5]
Apparent magnitude -1.6 to -2.94[5]
Angular diameter 29.8" — 50.1"[5]
Atmosphere[5]
Surface pressure 20–200 kPa[12] (cloud layer)
Scale height 27 km
Composition
89.8±2.0% Hydrogen (H2)
10.2±2.0% Helium
~0.3% Methane
~0.026% Ammonia
~0.003% Hydrogen deuteride (HD)
0.0006% Ethane
0.0004% water
Ices:
Ammonia
water
ammonium hydrosulfide(NH4SH)
Jupiter is the fifth planet from the Sun and the...

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