MSG 2 lost by SpaceTrack

From: Gerhard HOLTKAMP (
Date: Tue Feb 26 2008 - 19:49:46 UTC

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    State vectors for MSG 1 (2002-040B), MSG 2 (2005-049B), METEOSAT 6 (1993-073B) 
    and METEOSAT 7 (1997-049B) are available directly from flight dynamics of 
    Eumetsat in the following way: 
    Then go to the left-hand side of the page, "Orbital Parameters" (and there are 
    also instructions to subscribe to the state vector distribution service - but 
    you can access the data right away without subscribing).
    They are generally updated on Mondays.
    I took the most recent state vectors (epoch 25-FEB-08, 0 UTC) and checked them 
    against Spacetrack TLEs. While MSG 1, METOSAT 6 and 7 agree quite well I 
    found a whopping 1100 km difference for MSG 2 between the Eumetsat and the 
    Spacetrack positions. Looking more closely the Spacetrack TLEs for MSG 2 seem 
    to be stuck at epoch 30-JAN-08. MSG 2 has performed two NS maneuvers on 
    4-FEB-08 and 5-FEB-08. It looks like Spacetrack missed out on those maneuvers 
    and has sort of lost track of MSG 2.
    Gerhard HOLTKAMP
    Darmstadt, Germany
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