User:Urwumpe

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OrbiterWiki administrator since december 2005

Lord of the block list

A/S/L: 33/M/Wolfsburg, germany

Occupation: Full-time software developer for computer-aided engineering solutions.

Orbiter addon developer since summer 2003.

N-Mail: Urwumpe(ät)Yahoo(döt)com

We were, We are, and we will be.

Math formulas

$P$	Orbit parameter, $p=a \cdot (1- \epsilon^2)$
$u$	corrected true anomaly, $u=\omega + \varphi$
$R E$	mean planetary radius
$J 2$	non spherical gravity term
$i$	inclination
$ω$	Argument of perigee
$ε$	eccentricity

$\frac{d\Omega}{du} = -3\cdot J_{2}\cdot (\frac{R_E}{p})\cdot \sin^2{u} \cdot \cos {i} \cdot [ 1 + \epsilon \cdot \cos{u - \omega}]$

Some technical drawings I made, nothing too fancy.