masses of planets

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#504

From: LUDVIK KOWALSKI
Date: Wed, 01 Mar 1995 22:03

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According to my "local expert" only two planets have no natural satelites,
Venus and Mercury. Their masses are now determined on the basis of man-made
satelites. Previously they were estimated on the basis of sizes under the
assumption that average densities are the same as on earth.

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From: LUDVIK KOWALSKI <KOWALSKI@APOLLO.MONTCLAIR.EDU>
Subject: masses of planets
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