Brian Webb asked: > What would be the time for a launch based on the following set of parameters? > > Launch Site: California central coast > Date: 2009 October 6 > Launch Vehicle: Delta II with 9 solid fuel strap-on motors > Payload: Commercial imaging satellite > Orbital Altitude: 770 km > Orbit Type: Sun synchronous > Ascending Node: 10:30 a.m. > Orbital Period: 100 minutes This is the Worldview 2 satellite, and according to the owner's web site, its orbit will have its descending node at 10:30 AM (local standard time), not its ascending node: http://www.digitalglobe.com/index.php/88/WorldView-2 To launch from VAFB directly into a sun-synchronous, 10:30 AM descending node orbit, requires a late morning launch. Worldview 1 also entered a 10:30 AM descending node orbit, and it launched at 11:35 AM PDT (18:35 UTC), which was the start of a 14 min launch window. Expect about the same for Worldview 2. Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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