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In a message dated 11/2/2005 2:14:53 A.M. Pacific Standard Time, b_gimle@algonet.se writes: >>The quantity 'a' usually refers to the semi-major axis, ie the average orbital radius. Thus your constant K is eight times the standard G*M*(P/2/pi)^2, where GM = 398600.44 km^3s^-2 giving K=290784000 km^3min^-2<< At first I used semimajor axis, but after I found myself multiplying and dividing by two all the time, I simplified the arithmetic a bit by using the whole major axis. The results are equivalent, of course. ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html

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