Info

2.442819 X10-3

Ratio of the mass of the Sun to those of the planetary systems (planetary system masses include both atmosphere and satellites):

Mercury 6.023600 X106 580

Venus 4.085235 XlO5 5.2

Earth + Moon 3.289005 x10s 1.5

Quantity

Mars

Jupiter

Saturn

Uranus

Neptune

Pluto

Notes:

Symbol

Value

Units

Uncertainty (ppm)

3.098710 XlO6 1.047355 XlO3 3.4985 xlO3 2.2869 xlO4 1.9314X104 3X106

)X106

(1) Values from Abramowitz and Stegun [1970].

(2) The Gaussian gravitational constant has the given value by definition and serves to define the other astronomical constants,.

(3) The gravitational constant enters theories of orbital dynamics only through the product GA/. This product is well known for the various objects in the solar system. G itself, and consequently the masses in ~ kilograms of the Sun and planets, is not as well known. Therefore, accurate analyses should use directly the product GMq and the ratios of the masses of the planets and the Sun.

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