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Astronomy : Planets - Facts & Figures

 
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Nine Planets

Some important facts and figures about the nine planets of our solar system are tabulated below.

Planet Diameter of planet
in miles
(in km)
Distance from Sun
in million miles
(in million km)
Time taken to rotate once on its axis Time taken to revolve once around Sun Number of satellites
or moons
Mass of planet
(Earth=1)
Density of planet
(Water=1)
Surface Temperature
Mercury 3031
(4878)
36
(57.9)
58 days
16 hours
87.97 days None 0.055 5.43 −180 to 430oC
(−292 to 806oF)
Venus 7520
(12102)
67.2
(108.2)
243 days
14 hours
224.7 days None 0.81 5.25 465oC
(869oF)
Earth 7927
(12757)
93
(149.6)
23 hours
56 mins
365.24 days 1 1 5.52 −70 to 55oC
(−94 to 131oF)
Mars 4217
(6786)
141.6
(227.9)
24 hours
37 mins
686.98 days 2 0.11 3.95 −120 to 25oC
(−184 to 77oF)
Jupiter 88850
(142984)
483.6
(778.3)
9 hours
55 mins
11.86 years 16 317.8 1.33 −148oC
(−234oF)
Saturn 74901
(120536)
887
(1427)
10 hours
40 mins
29.46 years 18 95.18 0.69 −178oC
(−288oF)
Uranus 31765
(51118)
1784
(2871)
17 hours
14 mins
84.01 years 15 14.5 1.29 −213oC
(−351oF)
Neptune 30777
(49528)
2794
(4497)
16 hours
7 mins
164.79 years 8 17.14 1.64 −216oC
(−357oF)
Pluto 1420
(2285)
3675
(5914)
6 days
9 hours
248.54 years 1 0.0022 2.03 −223oC
(−369oF)

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