Re: Lacrosse 5 disappeared instead of flared at 21:51 UTC

From: John Locker (john@satcom.freeserve.co.uk)
Date: Tue Aug 01 2006 - 02:51:59 EDT

  • Next message: Ed Cannon: "Molniya 1-53"

    > Somewhere around 21:50:45 I started to look at my clock to trigger the 
    > camera countdown at 21:51:07 UTC. When I looked up again at 21:51:09 or 
    > so, it already was gone. It did not re-appear.
    
    Sounds familiar Marco....there's a little man somewhere who flicks a switch 
    when he realises you are watching it !  :O)
    
    Still clouded in here.......but things should improve Friday.
    
    John
    
    
    
    ----- Original Message ----- 
    From: "Marco Langbroek" <marco.langbroek@wanadoo.nl>
    To: "Philip Masding" <zen32156@zen.co.uk>; "satellite list" 
    <SeeSat-L@satobs.org>; "Pierre Neirink" <pierre-neirinck@wanadoo.fr>
    Sent: Monday, July 31, 2006 10:10 PM
    Subject: Lacrosse 5 disappeared instead of flared at 21:51 UTC
    
    
    >> Also if the YVV/33 degree theory is correct Marco has a chance to observe 
    >> flares in the next few days
    >>
    >> Flare Results for Observer Lat=52.15412 Long=4.49081
    >> Satellite NORAD 28646
    >> Flare Results for Flight Mode YVV Panel Angle 33
    >> 12. SAR MA 2.97104043228698 at 31/07/2006 21:51:22 Alt=74.2391395227923
    >
    > Phil a.o.,
    >
    > It did not flare, but disappeared again instead....
    >
    > I picked Lacrosse 5 (05-016A) up at about 21:50:00 UTC near Bootes/CrB. It 
    > was mag. +2.5 brightening to +2.0 in the next half minute or so.
    >
    > Somewhere around 21:50:45 I started to look at my clock to trigger the 
    > camera countdown at 21:51:07 UTC. When I looked up again at 21:51:09 or 
    > so, it already was gone. It did not re-appear.
    >
    > The photograph (21:51:18.1 to 21:51:28.8 UTC) shows no trail at all, 
    > meaning that at that time it must have been fainter than +3.5. Would it 
    > have been as bright as it was a 21:50:00 to 21:50:45 it would be visible 
    > on the image, and certainly if it subsequently would have flared.
    >
    > There was some thin cirrus in the sky, but the area where it should have 
    > flared was clear and faint stars are visible on the image.
    >
    > - Marco
    >
    > -----
    > Dr Marco Langbroek  -  SatTrackCam Leiden, Cospar 4353
    > Leiden, the Netherlands. 52.15412 N,  4.49081 E (WGS84), +0 m ASL
    >
    > SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html
    > Station (b)log: http://sattrackcam.blogspot.com
    > Atom RSS: http://sattrackcam.blogspot.com/atom.xml
    > e-mail: sattrackcam@wanadoo.nl
    > -----
    >
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