Re: Lacrosse 5 flare

From: Philip Masding (zen32156@zen.co.uk)
Date: Fri May 26 2006 - 15:22:07 EDT

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    Hi Morco
    This flare was predicted but I thought it would be quite faint and perhaps 
    too low for you to observe.
    
    Here is the full latest list of predictions for you location. There are no 
    more after 30/05/06.
    
    Flare Results for Observer Lat=52.16 Long=4.49
    Satellite NORAD 28646
    Flare Results for Flight Mode YVV Panel Angle 33
    2. SAR MA 4.44725895983621 at 25/05/2006 20:18:36 Alt=31.1519656922268
    3. SAR MA 9.64737602677019 at 25/05/2006 22:02:07 Alt=34.0654804178134
    5. SAR MA 6.80856688290189 at 26/05/2006 21:06:42 Alt=25.8692163562127
    6. SAR MA 7.93811568401555 at 26/05/2006 22:50:53 Alt=43.9545698751919
    8. SAR MA 0.594718679176849 at 27/05/2006 20:11:46 Alt=24.5690983257504
    9. SAR MA 1.0615067759014 at 27/05/2006 21:55:37 Alt=33.1829646271148
    11. SAR MA 0.194301408412399 at 28/05/2006 21:00:06 Alt=23.3132133565037
    13. SAR MA 5.14988865246367 at 29/05/2006 20:05:03 Alt=20.4936484032349
    14. SAR MA 9.16545060435455 at 29/05/2006 21:48:50 Alt=28.4380149814017
    
    Number 3 is the flare you saw last night. So the prediction based on this 
    panel angle of 33 degrees is 13 seconds early.
    
    If on the other hand the panel angle was 27 degrees we get
    
    Flare Results for Observer Lat=52.16 Long=4.49
    Satellite NORAD 28646
    Flare Results for Flight Mode YVV Panel Angle 27
    5. SAR MA 0.637288104773435 at 25/05/2006 22:02:21 Alt=37.2799747652266
    
    This time the timing is exact and the mis-angle (angle btween the reflected 
    light and a line from you to the satellite) is a much more reasonable 0.63 
    degrees.
    
    So now we have seen 4 flares for Lacrosse 5 which have suggested panel 
    angles of 35, 30, 36 an 27 degrees.
    
    I have a potentially good one tonight so I hope it's clear.
    
    Phil
    
    
    
    
    
    ----- 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: Thursday, May 25, 2006 11:15 PM
    Subject: Lacrosse 5 flare
    
    
    > Hi Phill, all,
    >
    > While preparing my camera for capturing it near culmination, I saw 
    > Lacrosse 5 briefly flare to magnitude -2.0 at 22:02:20 +/- 10 s UTC.
    >
    > - 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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    > 
    
    
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