Re: Lacrosse-5 flares and disappearance.

From: Gerhard HOLTKAMP (
Date: Fri Oct 19 2007 - 14:18:41 EDT

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    On 18-OCT-07 Bjorn Gimle wrote (concerning the Lacrosse-5 disappearances):
    >I don't quite follow your arguments or conclusions (are there any?) here.
    >During a pass Lacrosse can change its local sun-observer attitude by about a 
    >Do you mean that the disapperances occurred at nearly the same attitudes?
    >In that case it would be a local observer event?
    >Have there been any observations at the same moment from distant observers, 
    >to prove that it is a satellite event?
    What I meant was that if Lacrosse 5 keeps a local attitude (pointing with one 
    side always toward the center of the Earth and with another side always into 
    the direction of flight) than within this local satellite coordinate system 
    the sun would have moved by just 1 degree over the seven minutes of 
    observations starting at 20:12:15 UT, 14-AUG-07. During that time the angle 
    between the sun, the satellite and an observer on the ground would of course 
    change much more. What is interesting about Lacrosse 5 is that  there have 
    been at least two cases where two or more observers at locations hundreds of 
    km apart have seen a sudden (within two or three seconds) decrease in 
    brightness of that satellite at exactly the same time (while the satellite 
    was still lit by the sun of course). We are still at a loss of how to explain 
    Gerhard HOLTKAMP
    Darmstadt, Germany
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