Re: How to calculate the Mass of Mars.

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1 total messages Started by Lowell Herr Thu, 02 Mar 1995 12:11

#587

Author: Lowell Herr
Date: Thu, 02 Mar 1995 12:11

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I now remember the early "Earth mapping" project was called Transit
Satellite.  From that project, it was determined the Earth has depressions
of about 50 ft in the Northern Hemisphere and 25 ft in the Southern
Hemisphere.  All this was measured using Doppler Shift.  I would assume
more accurate mapping of the Earth is now known but in general it is
considered a "wrinkled orange."

Lowell Herr
Project PHYSLab
The Catlin Gabel School
Portland, OR 97225

On Thu, 2 Mar 1995, Andrew Bauer wrote:

> I know that the mass of Pluto was not known until its satellite Charon was
> discovered and its period of orbit timed.  And yes, the mass of the Sun can
> be calculated by knowing the period and mean orbital radius of a planet.

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