HI,
Right Ascention of the Ascending node.
The point in the orbit at which it crosses the equator going northbound.
Here 's a good example:
http://www.pe0sat.vgnet.nl/satellite/
73
Dave, G4DPZ
On 24/01/14 08:59, Lizeth Norman wrote:
*HI all,Found this at this page:http://www.amsat.org/amsat/articles/g3ruh/111.html http://www.amsat.org/amsat/articles/g3ruh/111.htmlOrbit Plane:* Fixed (almost) with respect to the stars, in orientation defined by argument of perigee, inclination and RAAN. Origin: Earth's centre. X: Directed towards perigee Y: 90 degrees from perigee round the orbit in direction of satellite's motion Z: Perpendicular to orbit plane I think I understand most of the math in the algorithm. In the above context, what does RAAN mean? Sorry for being obtuse! Norm n3ykf _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb