Re: Photo's of flashing Navstar 39 GPS satellite

From: Richard B. Langley (lang@unb.ca)
Date: Fri Jul 06 2012 - 12:59:28 UTC

  • Next message: Marco Langbroek: "Re: Photo's of flashing Navstar 39 GPS satellite"

    Navstar 39 (also known as SVN30) was decommissioned from active  
    service in the GPS constellation on 20 July 2011 (a list of all GPS  
    satellites, past and present, can be found here: http://gge.unb.ca/Resources/GPSConstellationStatus.txt 
    ; the list will be updated later this month). SVN30 was initially  
    maintained as a reserve satellite. But around 22 January 2012, the  
    satellite was boosted into a graveyard orbit and, presumably, fully  
    decommissioned and abandoned:
    http://gge.unb.ca/Resources/svn30_mm.pdf
    
    So, it is quite possible that the satellite is now tumbling, resulting  
    in the observed flashes. Questions: What is the approximate brightness  
    magnitude when it is flashing? And what is the typical magnitude of an  
    operational GPS satellite when viewing conditions are optimal?
    
    -- Richard Langley
    
    > Hi all,
    >
    > I have posted the imagery of the flashing GPS satellite Navstar 39  
    > (June 25) here:
    >
    > http://sattrackcam.blogspot.nl/2012/06/flashing-gps-satellite-navstar-39-usa.html
    >
    > I use GPS often. Nice to actually capture one of these satellites.
    >
    > - Marco
    >
    > -----
    > Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
    > e-mail: sattrackcam@langbroek.org
    >
    > Cospar 4353 (Leiden):   52.15412 N, 4.49081 E (WGS84), +0 m ASL
    > Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL
    > Station (b)log: http://sattrackcam.blogspot.com
    > Twitter: @Marco_Langbroek
    > -----
    >
    
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