3. -Mass (kg) 3.3 x 1023
-Diameter (km) 4879.4
-Mean density (kg/m3) 5420
-Escape velocity (m/s) 4300
-Average distance from Sun 0.387 AU
(57,909,175 km)
-Rotation period (length of day in Earth days) 58.65
-Revolution period (length of year in Earth days) 87.97
-Obliquity (tilt of axis degrees) 0
-Orbit inclination (degrees) 7
-Orbit eccentricity (deviation from circular) 0.206
-Mean surface temperature (K) 452
-Maximum surface temperature (K) 700
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-Minimum surface temperature (K) 100
4. -Mass (kg) 4.87 x 1024
-Diameter (km) 12104
-Mean density (kg/m3) 5250
-Escape velocity (m/s) 10400
-Average distance from Sun 0.723 AU (108,208,930 km)
-Rotation period (length of day in Earth days) 243.02
(retrograde)
-Revolution period (length of year in Earth days) 224.7
-
-Obliquity (tilt of axis degrees) 178
-Orbit inclination (degrees) 3.39
-Orbit eccentricity (deviation from circular) 0.007
-Mean surface temperature (K) 726
-Atmospheric components 96% carbon dioxide,
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3% nitrogen,
0.1% water vapor S
5. Mass (kg) 5.98 x 1024
Diameter (km) 12756
Mean density (kg/m3) 5520
Escape velocity (m/s) 11200
Average distance from Sun 1 AU (149,597,890 km)
Rotation period (length of day in Earth days) 1 (23.93
hours)
Revolution period (length of year in Earth days) 365.26
Obliquity (tilt of axis degrees) 23.4
Orbit inclination (degrees) 0
Mean surface temperature (K) 281
Mean maximum surface temperature (K) 310
Mean minimum surface temperature (K) 260
Highest point on surface Mount Everest
(over 8 km above sea-level)
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Atmospheric components 78% nitrogen,
21% oxygen,
1% argon
6. Mass (kg) 6.42 x 1023
Diameter (km) 6787
Mean density (kg/m3) 3940
Escape velocity (m/s) 5000
Average distance from Sun 1.524 AU (227,936,640 km)
Rotation period (length of day in Earth days) 1.026
Revolution period (length of year in Earth days) 686.98
Obliquity (tilt of axis degrees) 25
Orbit inclination (degrees) 1.85
Orbit eccentricity (deviation from circular) 0.093
Maximum surface temperature (K) 310 Minimum surface
temperature (K) 150
00Highest point on surface Olympus Mons
(about 24 km above surrounding lava plains)
Atmospheric components 95% carbon dioxide,
3% nitrogen,
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1.6% argon
7. Mass (kg) 1.90 x 1027
Diameter (km) 142,800
Mean density (kg/m3) 1314
Escape velocity (m/s) 59500
Average distance from Sun 5.203 AU (778,412,020
km)
Rotation period (length of day in Earth days) 0.41
(9.8 Earth hours)
Revolution period (length of year in Earth years)
11.86
Obliquity (tilt of axis degrees) 3.08
Orbit inclination (degrees) 1.3
Orbit eccentricity (deviation from circular) 0.048
Mean surface temperature (K) 120 (cloud tops)
Atmospheric components 90% hydrogen,
10% helium,
.07% methane
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Rings Faint ring.
Infrared spectra imply dark rock fragments
8. Mass (kg) 5.69 x 1026
Diameter (km) 120660
Mean density (kg/m3) 690
Escape velocity (m/s) 35600
Average distance from Sun 9.537 AU (1,426,725,400 km)
Rotation period (length of day in Earth days) 0.44 (10.2
Earth hours)
Revolution period (length of year in Earth years) 29.46
Obliquity (tilt of axis degrees) 26.7
Orbit inclination (degrees) 2.49
Atmospheric components 97% hydrogen,
3% helium,
.05% methane
Rings Rings are 270,000 km in diameter,
but only a few hundred meters thick.
Particles are centimeters to decameters
in size and are ice (some may be covered
with ice); there are traces of silicate EXIT
and carbon minerals. There are four main
ring groups and three more faint, narrow
ring groups separated by gaps called divisions.
9. Mass (kg) 8.68 x 1025
Diameter (km) 51118
Mean density (kg/m3) 1290
Escape velocity (m/s) 21300
Average distance from Sun 19.19 AU (2,870,972,200
km)
Rotation period (length of day in Earth days) 0.72
(17.9 Earth hours)(retrograde)
Revolution period (length of year in Earth days)
30,685 (84 Earth years)
Obliquity (tilt of axis degrees) 97.9 Orbit inclination
(degrees) 0.77
Orbit eccentricity (deviation from circular) 0.047
Mean temperature (K) 59
Atmospheric components 83% hydrogen,
15% helium,
2% methane (at depth)
Rings Uranus has a system of narrow, faint rings.
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Ring particles are dark, and could
consist of rocky or carbonaceous material.
10. Mass (kg) 1.02 x 1026
Diameter (km) 49528
Mean density (kg/m3) 1640
Escape velocity (m/s) 23300
Average distance from Sun 30.07 AU
(4,498,252,900 km)
Rotation period (length of day in Earth days) 0.67
(19.1 hours)
Revolution period (length of year in Earth days)
60,190 (164.8 Earth years)
Obliquity (tilt of axis degrees) 29.6
Orbit inclination (degrees) 1.77
Orbit eccentricity (deviation from circular) 0.009
Mean temperature (K) 48
Atmospheric components 74% hydrogen,
25% helium,
1% methane (at depth)
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Rings are narrow, and contain
concentrations of particles
called ring arcs.
11. Mass (kg) 1.29 x 1022
Diameter (km) 2300
Mean density (kg/m3) 2030
Escape velocity (m/s) 1100
Average distance from Sun 39.48 AU
(5,906,376,200 km)
Rotation period (length of day in Earth days)
6.39 (retrograde)
Revolution period (length of year in Earth
years) 247.92
Obliquity (tilt of axis degrees) 122.5
Orbit inclination (degrees) 17.15 Orbit
eccentricity (deviation from circular) 0.248
Atmospheric components perhaps methane
and nitrogen Surface materials perhaps
methane ice
At this point Pluto is not considered a planet
anymore, but there is still research going on to
find out.
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