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Orbit Period

Article: <>
From: Chris Marriott <>
Newsgroups: sci.astro.amateur
Subject: Re: How orbit elements translate to period
Date: Wed, 26 Mar 1997 17:48:02 +0000
Organization: SkyMap Software

In article <Pine.SOL.3.91.970326150944.5431B-100000@eigsun9>, TAMONE
Francois - System Engineer <> writes
>How to obtain a (or T=period) from the given orbit elements ?
>usually given orbit elements:
>e: eccentricity of ellipse
>Tp: time of perihelion
>w: argument of perihelion
>Node: ascending node longitude
>i: orbital inclination
>p: perihelion passage distance

Using your symbols above:

a = p/(1-e)
Period = a^1.5


Chris Marriott, SkyMap Software, U.K. e-mail:
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