Re: DMSP F18 search elements

From: Patrick Schmeer (pasc1312-seesat@yahoo.de)
Date: Sun Oct 18 2009 - 17:57:16 UTC

  • Next message: Ted Molczan: "FW: 4542 SATOBS F18 and F18r"

    --- Ted Molczan <ssl3molcz@rogers.com> wrote:
    > DMSP F18 is scheduled for launch on 2009 Oct 18,
    > between 16:12 UTC and 16:22 UTC, from Vandenberg
    > AFB, aboard an Atlas 5-401 rocket.
    > 
    > The launch vehicle's performance far exceeds mission
    > requirements; so much so, that its Centaur stage will
    > be disposed of in an unusual manner: a heliocentric
    > orbit. That burn will be visible from parts of Europe
    > about 3 h after launch, followed within minutes by the
    > dump of any remaining propellant.
    > 
    > Assuming launch at the start of the window, DMSP F18
    > will enter approximately the following orbit:
    > 
    > DMSP F18             
                    
    > 838 X 853 km
    > 1 72900U 09291.72202813  .00000000  00000-0  00000-0  0    07
    > 2 72900  98.8000 325.8000 0010000 270.0000 90.0000 14.13250000 08
    > 
    > On the first pass of Europe, beginning near 17:30 UTC,
    > the Centaur is likely to lead the DMSP by several
    > seconds in time.
     
    Just observed this pass. Two objects were seen, a bright
    leading one (mag 2.0) and a faint trailing one (mag 5-6),
    the latter at a higher elevation. Maximum separation was
    about 0.4 deg.
    
    Patrick Schmeer
    Saarbruecken, Germany
    49.2144N, 7.0617E, 293 m
    
    
    
          
    
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