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Next: “Sci.Physics” Redux, Tue Aug 10, 2010
From: eugeniusz on 10 Aug 2010 23:18 "Sam Wormley" <swormley1(a)gmail.com> wrote in message news:heWdnVMepvRKevzRnZ2dnUVZ_hadnZ2d(a)mchsi.com... > Beidou/Compass Satellite Achieves Geosynchronous Orbit > > http://www.gpsworld.com/gnss-system/compass/news/beidoucompass-satellite-achieves-geosynchronous-orbit-10315 > August 5, 2010 > > News courtesy of CANSPACE Listserve > > The first Beidou/Compass inclined geosynchronous orbit (IGSO) satellite > has achieved geosynchronous orbit. The satellite was launched on July 31 > from the Xichang Satellite Launch Center in China's Sichuan province. > > The inclination of the mean orbit is 55.06 degrees with eccentricity of > 0.0036 � an essentially circular orbit. The mean east longitude of the > sub-satellite ground point is 115 degrees, 47 minutes. Here is a plot of > the repeating ground track: > > http://www.gpsworld.com/files/gpsworld/nodes/2010/10315/beidou_igso1_ground_track.jpg > > At its northern most sub-satellite latitudes, the satellite should be > visible from Europe and parts of North America permitting signal analysis > from facilities in those regions. > > This is one of the first, if not the first, satellite to use such a highly > inclined circular geosynchronous orbit. The Solar Dynamics Observatory > satellite is in a circular IGSO with an inclination of 28 degrees. The > IGSO satellites of Sirius Satellite Radio use highly elliptical so-called > "tundra orbits." > |