Obs ML (4353), 17-18 May 2007: USA 161, various IGS's & Lacrosses

From: Marco Langbroek (marco.langbroek@wanadoo.nl)
Date: Thu May 17 2007 - 22:20:21 EDT

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    Obs SatTrackCam Leiden (Cospar 4353), 17-18 May 2007:
    
    classfd:
    27699 03 009B   4353 G 20070517212235800 17 75 1502334+453880 56 S+020 10
    27699 03 009B   4353 G 20070517212246500 17 75 1507391+545510 56 S+015 10
    25017 97 064A   4353 G 20070517220330800 17 75 1213590+226720 56 S+025 10
    25017 97 064A   4353 G 20070517220341500 17 75 1236144+204440 56 S+025 10
    26473 00 047A   4353 G 20070517223545800 17 75 1745038+767030 56 S+025 10
    26473 00 047A   4353 G 20070517223556500 17 75 1744094+710320 56 S+025 10
    26934 01 044A   4353 G 20070518001305800 17 75 1533161+088960 56 S+005 10
    26934 01 044A   4353 G 20070518001316500 17 75 1526125+129870 56 S+035 10
    30586 07 005A   4353 G 20070518010250800 17 75 1302454+331390 56 S+020 10
    30586 07 005A   4353 G 20070518010301500 17 75 1237199+372950 56 S+020 10
    30588 07 005C   4353 G 20070518010440800 17 75 1432278+157050 56 S+010 10
    30588 07 005C   4353 G 20070518010451500 17 75 1414300+208960 56 S+010 10
    30588 07 005C   4353 G 20070518010530800 17 75 1247077+389040 56 S+020 10
    30588 07 005C   4353 G 20070518010541500 17 75 1217516+426610 56 S+020 10
    
    Iridium 31:
    24950 97 051G   4353 F 20070517205636800 17 75 1846026+615380 56
    24950 97 051G   4353 F 20070517205647500 17 75 1818019+593300 56
    
    -------------------------------------------------------------------------
    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
    -------------------------------------------------------------------------
    
    Flares:
    01-044A (USA 161): slow to -1.5 at 00:12:50 UTC
    01-044A (USA 161): fast to -1 at 00:14:13 UTC
    
    
    Very clear and dark night. USA 161 was bright short after emergence from 
    eclipse, and made a second short flare later. IGS 1B was bright too, reaching +1 
    in Umi.
    
    While aiming the camera in preparation for 07-005C (IGS 4r), a bright +2 object 
    appeared in the west in a very similar track, some 2 minutes earlier. I took a 
    shot, and it turned out to be 07-005A (IGS 4A), which I had not expected to 
    become so bright. IGS 4r was seen next, reaching +1 while close to Arcturus.
    
    - 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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