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Earth in the sun's orbit
Greg Neill wrote:
"Carusus" wrote in message ... http://zebu.uoregon.edu/~soper/Sun/mass.html gives 2x10^30 as the mass of the sun. Is this correct? Not without specifying the units. In this case, kg would be the units, and the value 2x10^30kg would be a reasonable approximation to the mass of the Sun. I've seen a figure of 1.989x10^30kg quoted. NASA's "Planetary Fact Sheet" for the sun agrees; their figure is 1,989,100*10^24 kg. I'm not sure whether this is supposed to have seven significant figures or five, but I'd guess the latter. See http://nssdc.gsfc.nasa.gov/planetary/factsheet/sunfact.html. --Odysseus |
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