Saturday, March 12, 2011

Venus ( Zuhrah )

Venus ( Zuhrah )

Orbital Characteristics


Perihelion: 107,476,259 km, 0.71843270 AE

Aphelion: 108,942,109 km, 0.72823128 AE

Semi-major axis: 108,208,930 km, 0.723332 AE

Eccentricity: 0.0068

Orbital period: 224.70069 days, 0.6151970 years

Synodic period: 583.92 days

Average orbital speed: 35.02 km/s

Mean anomaly:

Inclination: 3.394 71°

Longitude of ascending node: 76.67069°

Argument of perihelion: 54.85229°

Satellites/moons: 0


Physical Characteristics

Equatorial radius: 6,051.8 km (0.9488 x Earth)

Flattening: < 0.0002

Surface area: 4.60×108 km2 (0.902 x Earth)

Volume: 9.38×1011 km3 (0.857 x Earth)

Mass: 4.8685×1024 kg (0.815 x Earth)

Mean density: 5.204 g/cm3

Equatorial surface gravity: 8.87 m/s2

Escape velocity: 10.46 km/s

Sidereal rotation period: -243 Earth days, -5832 Earth hours

Axial tilt : 177.3°

Albedo: 0.65

Average surface temperatures: 735 K, 462 °C, 864 °F

Apparent magnitude: -4.6

Angular diameter: 9.7" - 66.0"


The Atmosphere

Composition:

~96.5% Carbon dioxide (CO2)

~3.5% Nitrogen (N2)

0.015% Sulfur dioxide (SO2)

0.007% Argon

0.002% Water vapor (H2O)

0.001 7% Carbon monoxide (CO)

0.001 2% Helium

0.000 7% Neon

trace Carbonyl sulfide (COS)

trace Hydrogen chloride (HCl)

trace Hydrogen fluoride (HF)

Source

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