Obs ML (4353), 24 Nov 2006: Lacrosse 3 & 5 Rk, ISS

From: Marco Langbroek (marco.langbroek@wanadoo.nl)
Date: Fri Nov 24 2006 - 09:11:57 EST

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    Obs SatTrackCam Leiden (Cospar 4353), 24 Nov 2006:
    
    Classfd:
    25017 97 064A   4353 F 20061124041701100 17 75 1421550+638270 56 S+035 10
    25017 97 064A   4353 F 20061124041711800 17 75 1421031+590420 56 S+035 10
    28647 05 016B   4353 F 20061124045701100 17 75 0714346+377020 56 S+010 10
    28647 05 016B   4353 F 20061124045711800 17 75 0742046+361800 56 S+010 10
    28647 05 016B   4353 F 20061124045801100 17 75 0933432+244920 56 S+030 10
    
    ISS:
    25544 98 067A   4353 F 20061124053626100 17 75 0739055+028520 56 S-030 10
    25544 98 067A   4353 F 20061124053636800 17 75 0800382+049940 56 S-030 10
    25544 98 067A   4353 F 20061124053716100 17 75 0958115+144870 56 S-030 10
    25544 98 067A   4353 F 20061124053726800 17 75 1041274+168430 56 S-030 10
    
    -------------------------------------------------------------------------
    Method: Canon Digital Ixus 400 + ASTRORECORD astrometric software.
    Camera at manual mode, "10 second" (= 10.7 second) exposure, wide field 
    f2.8/7.41 mm.
    
    What these numbers mean:
    http://www.satobs.org/position/IODformat.html
    
    
    I was up early and did a morning session. Clear sky but with occasional fast 
    moving streaks of low clouds. Targets were Lacrosse 3, Lacrosse 5 Rk and ISS.
    
    Highlight of the night was a fine pass of the ISS at 6:37 local time (5:37 UTC), 
    see the two pictures here;
    
    http://sattrackcam.blogspot.com/2006/11/lacrosse-lacrosse-rocket-and-iss.html
    
    When it came into view at about 35 degrees altitude, close to Procyon, it 
    already was well into the negative magnitudes, about magnitude -3 I estimate. It 
    stayed that bright while crossing the body of Leo and passing close to Saturn at 
    about 55 degrees altitude: it dimmed when going towards the eastern horizon. It 
    had a somewhat orange colour again. I have seen ISS this bright before, but that 
    was during zenith passes. I wonder what brightness it currently could attain in 
    the zenith. Hope to be able to check that out soon, as ISS starts to make more 
    favourable morning passes.
    
    The Lacrosse 5 Rk rocket stage (05-016B) made a nice pass too. While traversing 
    from Auriga into Gemini around 4:57 UTC it was quite bright, magnitude +1. Once 
    in Leo at 4:58 local time, it had faded to mag +3.5. Got 2 photographs and hence 
    4 positions, but the last one I dropped because it came out clearly erratic.
    
    My first target Lacrosse 3 (97-064A) around 4:17 UTC was faint, the trail on the 
    photograph was rather marginal. My results suggest it was 0.1 degree off-track 
    relative to a 5-day old elset, but as the trail was very marginal, don't pin me 
    down on it.
    
    ISS positions are for fun and calibration check.
    
    - 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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