[amsat-bb] Re: sirius orbit name?
rmann at latencyzero.com
Thu Feb 21 17:35:17 PST 2008
On Feb 21, 2008, at 2:10 PM, melachri at 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
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).
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