On 05/25/17 1:32 PM, Kevin Fetter via Seesat-l wrote: > http://www.spaceflightinsider.com/organizations/roscosmos/soyuz-rocket-successfully-delivers-eks-2-early-warning-satellite-rare-orbit/ Note that the headline on the article refers to a "rare orbit", and refers to the orbit as geosynchronous but not geostationary. With the inclination (~63.8 degrees) of the orbit this satellite and its predecessor (EKS-1, or Kosmos 2510) are in, a geosynchronous orbit (i.e. having a period of 23hr 56min) IS known as a Tundra orbit, as the article states, and one of the names used for these early warning satellites is Tundra, so it may be that this was the original plan for their orbit, but nearly two years after the launch of the first, it remains in the familiar Molniya-type orbit with a period of half the period of a Tundra orbit, and this is also the orbit this latest satellite is in. _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Mon May 29 2017 - 17:07:10 UTC
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