Venus Statistics
Mass (kg) 4.869e+24
Mass (Earth = 1) .81476
Equatorial radius (km) 6,051.8
Equatorial radius (Earth = 1) .94886
Mean density (gm/cm^3) 5.25
Mean distance from the Sun (km) 108,200,000
Mean distance from the Sun (Earth = 1) 0.7233
Rotational period (days) -243.0187
Orbital period (days) 224.701
Mean orbital velocity (km/sec) 35.02
Orbital eccentricity 0.0068
Tilt of axis (degrees) 177.36
Orbital inclination (degrees) 3.394
Equatorial surface gravity (m/sec^2) 8.87
Equatorial escape velocity (km/sec) 10.36
Visual geometric albedo 0.65
Magnitude (Vo) -4.4
Mean surface temperature 482°C
Atmospheric pressure (bars) 92
    Atmospheric compositionCarbon dioxideNitrogen

          Trace amounts of: Sulfur dioxide, water vapor,
          carbon monoxide, argon, helium, neon,
hydrogen chloride, and hydrogen fluoride.
 

96%
3+%

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Earth Statistics
Mass (kg) 5.976e+24
Mass (Earth = 1) 1.0000e+00
Equatorial radius (km) 6,378.14
Equatorial radius (Earth = 1) 1.0000e+00
Mean density (gm/cm^3) 5.515
Mean distance from the Sun (km) 149,600,000
Mean distance from the Sun (Earth = 1) 1.0000
Rotational period (days) 0.99727
Rotational period (hours) 23.9345
Orbital period (days) 365.256
Mean orbital velocity (km/sec) 29.79
Orbital eccentricity 0.0167
Tilt of axis (degrees) 23.45
Orbital inclination (degrees) 0.000
Equatorial escape velocity (km/sec) 11.18
Equatorial surface gravity (m/sec^2) 9.78
Visual geometric albedo 0.37
Mean surface temperature 15°C
Atmospheric pressure (bars) 1.013
Atmospheric compositionNitrogenOxygenOther
77%
21%
2%
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Moon Statistics
Mass (kg) 7.349e+22
Mass (Earth = 1) 1.2298e-02
Equatorial radius (km) 1,737.4
Equatorial radius (Earth = 1) 2.7241e-01
Mean density (gm/cm^3) 3.34
Mean distance from Earth (km) 384,400
Rotational period (days) 27.32166
Orbital period (days) 27.32166
Average length of lunar day (days) 29.53059
Mean orbital velocity (km/sec) 1.03
Orbital eccentricity 0.0549
Tilt of axis (degrees) 1.5424
Orbital inclination (degrees) 5.1454
Equatorial surface gravity (m/sec^2) 1.62
Equatorial escape velocity (km/sec) 2.38
Visual geometric albedo 0.12
Magnitude (Vo) -12.74
Mean surface temperature (day) 107°C
Mean surface temperature (night) -153°C
Maximum surface temperature 123°C
Minimum surface temperature -233°C

omparison, the average pressure of the Earth is 1000 millibars.
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Mars Statistics
Mass (kg) 6.421e+23
Mass (Earth = 1) 1.0745e-01
Equatorial radius (km) 3,397.2
Equatorial radius (Earth = 1) 5.3264e-01
Mean density (gm/cm^3) 3.94
Mean distance from the Sun (km) 227,940,000
Mean distance from the Sun (Earth = 1) 1.5237
Rotational period (hours) 24.6229
Rotational period (days) 1.025957
Orbital period (days) 686.98
Mean orbital velocity (km/sec) 24.13
Orbital eccentricity 0.0934
Tilt of axis (degrees) 25.19
Orbital inclination (degrees) 1.850
Equatorial surface gravity (m/sec^2) 3.72
Equatorial escape velocity (km/sec) 5.02
Visual geometric albedo 0.15
Magnitude (Vo) -2.01
Minimum surface temperature -140°C
Mean surface temperature -63°C
Maximum surface temperature 20°C
Atmospheric pressure (bars) 0.007
Atmospheric composition Carbon Dioxide (C02)Nitrogen (N2)Argon (Ar) Oxygen (O2)Carbon Monoxide (CO)Water (H2O)Neon (Ne) Krypton (Kr)Xenon (Xe)Ozone (O3)
95.32%
2.7%
1.6%
0.13%
0.07%
0.03%
0.00025%
0.00003%
0.000008%
0.000003%

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Jupiter Statistics
Mass (kg) 1.9007e+27
Mass (Earth = 1) 3.1794e+02
Equatorial radius (km) 71,492
Equatorial radius (Earth = 1) 1.1209e+01
Mean density (gm/cm^3) 1.33
Mean distance from the Sun (km) 778,330,000
Mean distance from the Sun (Earth = 1) 5.2028
Rotational period (days) 0.41354
Orbital period (days) 4332.71
Mean orbital velocity (km/sec) 13.07
Orbital eccentricity 0.0483
Tilt of axis (degrees) 3.13
Orbital inclination (degrees) 1.308
Equatorial surface gravity (m/sec^2) 22.88
Equatorial escape velocity (km/sec) 59.56
Visual geometric albedo 0.52
Magnitude (Vo) -2.70
Mean cloud temperature -121°C
Atmospheric pressure (bars) 0.7
Atmospheric compositionHydrogenHelium
90%
10%
+ 3.93 X 10²³ kg de satellites

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Saturn Statistics
Mass (kg) 5.689e+26
Mass (Earth = 1) 9.5181e+01
Equatorial radius (km) 60,268
Equatorial radius (Earth = 1) 9.4494e+00
Mean density (gm/cm^3) 0.69
Mean distance from the Sun (km) 1,429,400,000
Mean distance from the Sun (Earth = 1) 9.5388
Rotational period (hours) 10.233
Orbital period (years) 29.458
Mean orbital velocity (km/sec) 9.67
Orbital eccentricity 0.0560
Tilt of axis (degrees) 25.33
Orbital inclination (degrees) 2.488
Equatorial surface gravity (m/sec^2) 9.05
Equatorial escape velocity (km/sec) 35.49
Visual geometric albedo 0.47
Magnitude (Vo) 0.67
Mean cloud temperature -125°C
Atmospheric pressure (bars) 1.4
Atmospheric compositionHydrogenHelium
97%
3%
+ 1.41 X 10²³ kg de satellites

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Uranus Statistics
Discovered by William Herschel
Date of discovery 1781
Mass (kg) 8.687e+25
Mass (Earth = 1) 1.4535e+01
Equatorial radius (km) 25,559
Equatorial radius (Earth = 1) 4.0074
Mean density (gm/cm^3) 1.29
Mean distance from the Sun (km) 2,870,990,000
Mean distance from the Sun (Earth = 1) 19.1914
Rotational period (hours) -17.9
Orbital period (years) 84.01
Mean orbital velocity (km/sec) 6.81
Orbital eccentricity 0.0461
Tilt of axis (degrees) 97.86
Orbital inclination (degrees) 0.774
Equatorial surface gravity (m/sec^2) 7.77
Equatorial escape velocity (km/sec) 21.30
Visual geometric albedo 0.51
Magnitude (Vo) 5.52
Mean cloud temperature -193°C
Atmospheric pressure (bars) 1.2
Atmospheric compositionHydrogenHeliumMethane
83%
15%
2%
+ 9.12 X 10²¦ kg de satellites
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Neptune Statistics
Discovered by Johann Gotfried Galle
Date of discovery September 23, 1846
Mass (kg) 1.024e+26
Mass (Earth = 1) 1.7135e+01
Equatorial radius (km) 24,746
Equatorial radius (Earth = 1) 3.8799e+00
Mean density (gm/cm^3) 1.64
Mean distance from the Sun (km) 4,504,300,000
Mean distance from the Sun (Earth = 1) 30.0611
Rotational period (hours) 16.11
Orbital period (years) 164.79
Mean orbital velocity (km/sec) 5.45
Orbital eccentricity 0.0097
Tilt of axis (degrees) 29.56
Orbital inclination (degrees) 1.774
Equatorial surface gravity (m/sec^2) 11.0
Equatorial escape velocity (km/sec) 23.50
Visual geometric albedo 0.41
Magnitude (Vo) 7.84
Mean cloud temperature -193 to -153°C
Atmospheric pressure (bars) 1-3
Atmospheric compositionHydrogenHeliumMethane
85%
13%
2%
+ 2.14 X 10²² kg de satellites

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