Re: Optical 10 Dec 2013 Part 2

From: Marco Langbroek (marco.langbroek@online.nl)
Date: Thu Dec 12 2013 - 22:05:21 UTC

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    Greg Roberts schreef op 12-12-2013 14:09:
    
    > NOTES:
    > ----------
    > (1) Ive done three plane searches for USA 186 #28888 and so far
    >      failed to recover it. Two were partials planes of about 70
    >      minutes each whilst the last one was about 160 minutes with
    >      good conditions. Despite careful examination of all 2000 odd
    >      images secured several times no unknown object was detected.
    >      Either USA 186 has been de-orbited or, more likely, the
    >      transit height over my location has been decreased and the
    >      satellite may have been in shadow at the point of the orbit
    >      examined which was about 20 seconds early on predicted
    >      eclipse entry point.
    
    
    As I wrote here:
    
    http://sattrackcam.blogspot.nl/2013/10/past-and-future-of-kh-11-keyholeevolved.html
    
    ...based on past patterns, I expect USA 186 to manoeuvre this winter in a 
    similar way as USA 161 did late August 2011. I expect it to change its orbital 
    plane westwards in terms of RAAN by 10 degrees (and a slight inclination change 
    as well) and drastically lower apogee.
    
    - 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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