MadSci Network: Astronomy

Subject: How did people know the mass of pluto?

Date: Tue Mar 1 22:30:53 2005
Posted by david
Grade level: teacher/prof School: No school entered.
City: No city entered. State/Province: No state entered. Country: australia
Area of science: Astronomy
ID: 1109737853.As

I mean before its moon was discovered. There have been values in texts for many 
decades now, but at that distance it would be difficult (impossible?) to 
measure data on smaller objects affected by pluto's gravity.

Re: How did people know the mass of pluto?

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