[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: sirius orbit name?




On Feb 21, 2008, at 2:10 PM, melachri@speakeasy.net wrote:

> You are confusing geosynchronous with geostationary. Geosynchronous  
> simply means that the orbit period is equal to one sidereal day, so  
> it's "synchronized" with the earth's rotation. As a result, it will  
> always trace the same pattern on the earth's surface. The orbit  
> shape can be just about anything as long as the period is 23 hours,  
> 56 minutes, 4.1 seconds.
>
> A special case of geosynchronous orbits is the geostationary orbit,  
> which as you point out, is circular with zero inclination. As its  
> name indicates, it appears stationary to an earth observer, so the  
> "pattern" on the earth's surface is simply the single sub-satellite  
> point.


My bad. I thought it meant that its longitude never changed. I guess  
there's no special name for a circular geosynchronous orbit (such that  
the ground track is a line segment of constant longitude).

-- 
Rick

_______________________________________________
Sent via AMSAT-BB@amsat.org. 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



AMSAT Top AMSAT Home