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Astronomical Constants

Name Symbol Value

Constant, Solar

1400 W m-2

Earth Average Density

5.517 × 103 kg m-3

Earth Average Radius

R

6.37 × 106 m

Earth Magnetic Field, Horizontal Component of

B0

1.8 × 10-5 T

Earth Mass

M

5.972 × 1024 kg

Earth-Moon Mean Distance

3.844 × 108 m

Energy Production, Sun

3.90 × 1026 W

Gravitational Acceleration, Moon

1.619 m s-2

Horizontal Component of Earth Magnetic Field

B0

1.8 × 10-5 T

Mass, Earth

M

5.972 × 1024 kg

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