Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!philabs!cmcl2!floyd!vax135!ariel!houti!hogpc!houxm!hocda!spanky!burl!we13!ihnp4!ixn5c!inuxc!fred From: fred@inuxc.UUCP Newsgroups: net.math Subject: orbital calculations? Message-ID: <693@inuxc.UUCP> Date: Thu, 9-Jun-83 11:24:15 EDT Article-I.D.: inuxc.693 Posted: Thu Jun 9 11:24:15 1983 Date-Received: Sat, 11-Jun-83 23:07:21 EDT Lines: 13 I'm looking for some information about orbital computation methods. I'm writing a computer program for home computer systems that essentially solve the n body gravitational (n something around ten bodies) attractional problem. I would like the program to be able to plot out earth to moon orbits, show the stabilities of the L-5 points, and demonstrate the gravitational whip and braking effects of planetary fly-bys. I intend to solve the differential equations using either a Runge Kutta or predictor corrector formulation. Now to my question. How do the big boys (NASA - JPL etc) formulate this problem when they are running orbital calculations? Fred (ABI Indy)