Astronomy Planets - Venus Bulk Parameters | Orbital Parameters | Mean Orbital Elements (J2000) Observational Parameters | Atmospheric Parameters Satellites   Bulk Parameters Mass 4.8685 × 1024 kg Volume 92.843 × 1010 km3 Equatorial Radius 6051.8 km Polar Radius 6051.8 km Volumetric Mean Radius 6051.8 Ellipticity 0.000 Mean Density 5243 kg m-3 Equatorial Surface Gravity 8.87 m s-2 Escape Velocity 10.36 km s-1 GM 0.3249 × 106 km3 s-2 Bond Albedo 0.750 Visual Geometric Albedo 0.65 Visual Magnitude -4.40 Solar Irradiance 2613.9 W m-2 Black-Body Temperature 231.7 K Moment of Inertia 0.33 I MR-2 Topographic Range 15 km Orbital Parameters Semimajor Axis 108.21 × 106 km Sidereal Orbit Period 224.701 days Tropical Orbit Period 224.695 days Perihelion 107.48 × 106 km Aphelion 108.94 × 106 km Synodic Period 583.92 days Mean Orbital Velocity 35.02 km s-1 Maximum Orbital Velocity 35.26 km s-1 Minimum Orbital Velocity 34.79 km s-1 Orbital Inclination 3.39 ° Orbital Eccentricity 0.0067 Sidereal Rotation Period 5832.5 hours Length of Day 2802.0 hours Obliquity to Orbit 177.36 Mean Orbital Elements (J2000) Semimajor Axis 0.72333199 AU Orbital Eccentricity 0.00677323 Orbital Inclination 3.39471° Longitude of Ascending Node 76.68069° Longitude of Perihelion 131.53298° Mean Longitude 181.97973°: Observational Parameters Maximum Apparent Diameter from Earth 66.0 arc seconds Minimum Apparent Diameter from Earth 9.7 arc seconds Maximum Distance from Earth 261.0 × 106 km Minimum Distance from Earth 38.2 × 106 km Apparent Magnitude near Opposition -4.6 Atmospheric Parameters Surface Pressure 92 bars Surface Density about 65 kg m-3 Scale Height 15.9 km Average Temperature 737 K Diurnal Temperature Range about 0 Surface Wind Speeds 0.3 to 1.0 m s-1 Mean Molecular Weight 43.45 g mol-1 Carbon Dioxide CO2 96.5% Nitrogen N2 3.5% Sulphur Dioxide SO2 150 ppm Argon Ar 70 ppm Water H2O 20 ppm Carbon Monoxide CO 17 ppm Helium He 12 ppm Neon Ne 7 ppm Satellites Venus has no known satellites

Page compiled: Wed Sep 05 18:37:57 GMT+01:00 2001