Astronomical Data

Body

Mass (Kg)

mean Radius (m)

Orbital Period (Years)

Mean Orbital Radius (M)

Sun

1.991 x 1030

6.96 x 108

Mercury

3.18 x 1023

2.43 x 106

0.241

5.79 x 1010

Venus

4.88 x 1024

6.06 x 106

0.615

1.08 x 1011

Earth

5.98 x 1024

6.37 x 106

1.00

1.50 x 1011

Mars

6.42 x 1023

3.37 x 106

1.88

2.28 x 1011

Jupiter

1.90 x 1027

6.99 x 107

11.9

7.78 x 1011

Saturn

5.68 x 1026

5.85 x 107

29.5

1.43 x 1012

Uranus

8.68 x 1025

2.33 x 107

84.0

2.87 x 1012

Neptune

1.03 x 1026

2.21 x 107

165

4.50 x 1012

Moon

7.36 x 1022

1.74 x 106

27.3 days

3.84 x 108

Note: Pluto, which had long been considered a planet, has been recategorized. It now belongs to the class of astronomical bodies called dwarf planets, which are smaller than planets.

Note: Pluto, which had long been considered a planet, has been recategorized. It now belongs to the class of astronomical bodies called dwarf planets, which are smaller than planets.

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