Astronomy : Planets - Facts & Figures

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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 430^oC (−292 to 806^oF)
Venus	7520 (12102)	67.2 (108.2)	243 days 14 hours	224.7 days	None	0.81	5.25	465^oC (869^oF)
Earth	7927 (12757)	93 (149.6)	23 hours 56 mins	365.24 days	1	1	5.52	−70 to 55^oC (−94 to 131^oF)
Mars	4217 (6786)	141.6 (227.9)	24 hours 37 mins	686.98 days	2	0.11	3.95	−120 to 25^oC (−184 to 77^oF)
Jupiter	88850 (142984)	483.6 (778.3)	9 hours 55 mins	11.86 years	16	317.8	1.33	−148^oC (−234^oF)
Saturn	74901 (120536)	887 (1427)	10 hours 40 mins	29.46 years	18	95.18	0.69	−178^oC (−288^oF)
Uranus	31765 (51118)	1784 (2871)	17 hours 14 mins	84.01 years	15	14.5	1.29	−213^oC (−351^oF)
Neptune	30777 (49528)	2794 (4497)	16 hours 7 mins	164.79 years	8	17.14	1.64	−216^oC (−357^oF)
Pluto	1420 (2285)	3675 (5914)	6 days 9 hours	248.54 years	1	0.0022	2.03	−223^oC (−369^oF)