Saturday, March 12, 2011

Earth (Bumi)

Earth ( Bumi )

Orbital Characteristics


Perihelion: 147,098,074 km, 0.9832898912 AE

Aphelion: 152,097,701 km, 1.0167103335 AE

Semi-major axis: 149,597,887.5 km, 1.0000001124 AE

Eccentricity: 0.016710219

Orbital period: 365.256366 days

Synodic period:

Average orbital speed: 29.783 km/s

Mean anomaly:

Inclination: 1°34'43.3"

Longitude of ascending node: 348.73936°

Argument of perihelion: 114.20783°


Satellites/moons: 1 (Moon)


Physical Characteristics

Equatorial radius: 6,378.1 km

Flattening: 0.0033528

Surface area: 510,072,000 km2

Volume: 1.0832073×1012 km3

Mass: 5.9736×1024 kg

Mean density: 5.5153 g/cm3

Equatorial surface gravity: 9.780327 m/s2

Escape velocity: 11.186 km/s

Sidereal rotation period: 0.99726968 d Earth days, 23h 56m 4.100s Earth hours

Axial tilt : 23.439281°

Albedo: 0.367

Average surface temperatures: 185/331 K, -88/58 °C, -126/136 °F

Apparent magnitude:

Angular diameter:


The Atmosphere

Composition:

78.08% Nitrogen (N2)

20.95% Oxygen (O2)

0.93% Argon

0.038% Carbon dioxide (CO2)

ca. 1% water vapor (H2O)

18.18 ppm Neon

5.24 ppm Helium

1.745 ppm Methane (CH4)

1.14 ppm Krypton

0.55 ppm Hydrogen (H2)

Source

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