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Quick Planet Facts (Including Earth's Moon)
Mercury
Venus
The Moon
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto
Mercury:
Perihelion = 28,600,000 miles
Aphelion = 43,400,000 miles
Mean = 35,980,000 miles
Mass = 1/18 of Earth
Radius = 1,515 miles
Mean Density = 5.4
Rotation about axis = 58.7 days
Revolution around sun = 0.24 years
Temperature = -290° F to 810° F
No Moons
Atmosphere = Sodium, Helium, Hydrogen, and Oxygen
Inclination of orbit = 7.0°
Eccentricity of orbit = 0.21
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Venus:
Perihelion = 66,800,000 miles
Aphelion = 67,700,000 miles
Mean = 67,230,000 miles
Mass = 0.82 of Earth
Radius = 3752.5 miles
Mean Density = 5.3
Rotation about axis = 243 days (retrograde)
Revolution around sun = 0.62 years
Temperature = 858° F
No Moons
Atmosphere = Carbon dioxide, Nitrogen, and Traces of Water Vapor, Argon, Carbon Monoxide, Neon, and Sulfur Dioxide
Inclination of orbit = 3.4°
Eccentricity of orbit = 0.01
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The Moon:
Perihelion = 221,465 miles
Aphelion = 252,711 miles
Mean = 238,857 miles
Mass = 1/81 of Earth
Radius = 1,080 miles
Mean Density = ?
Rotation about axis = 27 days 7 hours 43 minutes
Revolution around Earth = 27 days 7 hours 43 minutes
Temperature = -280° F to 260° F
Atmosphere = Little or none
Inclination of orbit = ?
Eccentricity of orbit = ?
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Mars:
Perihelion = 128,600,000 miles
Aphelion = 154,800,000 miles
Mean = 141,600,000 miles
Mass = 0.11 of Earth
Radius = 2093.5 miles
Mean Density = 3.9
Rotation about axis = 24.6 hours
Revolution around Sun = 1.88 years
Temperature = -189° to 63° F
2 Moons
Atmosphere = Carbon dioxide, Nitrogen, Argon, Oxygen, Krypton, Neon, Carbon Monoxide, Xenon, and Water Vapor
Inclination of orbit = 1.85°
Eccentricity of orbit = 0.09
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Jupiter:
Perihelion = 460,200,000 miles
Aphelion = 507,000,000 miles
Mean = 483,600,000
Mass = 317.8 times the Earth
Radius = 44,240 miles
Mean Density = 1.3
Rotation about axis = 9.8 hours
Revolution around Sun = 11.86 years
Temperature = -193° F to 63° F
16 Moons (more are currently being discovered)
Atmosphere = Hydrogen, Helium, and Traces of Methane, Ammonia, Carbon Monoxide, Ethane, Acetylene, Phosphine, and Water Vapor
Inclination of orbit = 1.3°
Eccentricity of orbit = 0.05
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Saturn:
Perihelion = 838,800,000 miles
Aphelion = 937,600,000 miles
Mean = 888,200,000 miles
Mass = 95.1 times the Earth
Radius =37,209 miles
Mean Density = 0.7
Rotation about axis = 10.66 hours
Revolution around Sun = 29.46 years
Temperature = -285° F
20 Moons (and still counting)
Atmosphere = Hydrogen, Helium, and Traces of Methane, Ammonia, Ethane, and Phosphine
Inclination of orbit = 2.49°
Eccentricity of orbit = 0.06
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Uranus:
Perihelion = 1,702,100,000 miles
Aphelion = 1,870,800,000 miles
Mean = 1,786,400,000 miles
Mass = 14.5 times the Earth
Radius = 15,839.5 miles
Mean Density = 1.2
Rotation about axis = 17.24 hours
Revolution around Sun = 84.01 days
Temperature = -357° F
15 Moons
Atmosphere = Hydrogen, Helium, Methane
Inclination of orbit = 0.77°
Eccentricity of orbit = 0.05
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Neptune:
Perihelion = 2,774,800,000 miles
Aphelion = 2,824,000,000 miles
Mean = 2,798,800,000 miles
Mass = 17.2 times the Earth
Radius = 15,326 miles
Mean Density = 1.7
Rotation about axis = 16 hours
Revolution around Sun = 164.79
Temperature = -360° F
8 Moons
Atmosphere = Hydrogen, Helium, and Methane
Inclination of orbit = 1.77°
Eccentricity of orbit = 0.01
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Pluto:
Perihelion = 2,794,600,000 miles
Aphelion = 4,582,700,000 miles
Mean = 3,666,200,000 miles
Mass = 0.004 of the Earth
Radius = 711 miles
Mean Density = 1.99
Rotation about axis = 6.4 days
Revolution around Sun = 247.7
Temperature = -369° F to -387° F
1 Moon
Atmosphere = Methane
Inclination of orbit = 17.2°
Eccentricity of orbit = 0.25
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Created On 02/02/01 by Andrew O'Hara (C) 2001
E-mail Andrew O'Hara