What is the total mass of all the planets in our Solar System? What fraction of this total planetary mass does Jupiter represent? What fraction does Earth represent?

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Answer 1 · 2016-07-14T12:33:43

#71.1% and 0.22%#

From Planetary Fact Sheet - Metric, NASA:

Mass# (10^24 kg)#

MERCURY VENUS EARTH MARS JUPITER

0.330 4.87 5.97 0.642 1898

SATURN URANUS NEPTUNE

568 86.8 102.00

The ratio (Jupiter mass)/(8-planet total mass)

#=0.712 = 71.2%#

The ratio (Earth mass)/(8-planet total mass)

#=0.00224# = 1 in 447, nearly