Obs and els of bright unid satellite

From: Dave Waterman (staradmike@hotmail.com)
Date: Tue May 14 2013 - 08:51:58 UTC

  • Next message: Russell Eberst: "2013MAY12-13.OBS"

    On May 7, searching for 03009A = IGS 1A = #27698 I thought I found it about
    34 minutes early. I was unaware that someone else recently had found the
    real 03009A. On the 8th I found an object in a similar orbit. Fitting an
    orbit to both days I found the same object on the 13th. I cannot match
    any of these 3 passes to any known object.
    
    The object is typically about mag 3 steady (absolute maybe 4.5).
    
    Observations in OTWG format ( http://www.satobs.org/position/UKformat.html )
    
    YATELEY(WATERMAN)ENGLAND
    IntlId SiteYYMMDDHHMMSSss  Sss  TCHHMMmm   DDddd  Ddd E             MMmMMmSSSssA
    9900000211513050721405272  020  13151337  +2907   005 5                         
    9900000211513050721412997  020  13160907  +5794   003 5                         
    9900000211513050721415231  020  13174530  +7212   004 5                         
    9900000211513050821125894  020  13182359  +3954   004 5                         
    9900000211513050821144584  020  13222247  +5292   013 5                         
    9900000211513051321545442  020  13135096  +1793   007 5                         
    9900000211513051321551883  020  13133534  +3701   004 5             +23        S
    9900000211513051321553264  020  13132058  +4959   006 5                         
     Total observations = 8
     
    Or in IOD format: ( http://www.satobs.org/position/IODformat.html )
    
          99 000ZRO 2115   2013050721405272  27 35 151337 +2907   56
          99 000ZRO 2115   2013050721412997  27 35 160907 +5794   36               
          99 000ZRO 2115   2013050721415231  27 35 174530 +7212   46               
          99 000ZRO 2115   2013050821125894  27 35 182359 +3954   46               
          99 000ZRO 2115   2013050821144584  27 35 222247 +5292   17               
          99 000ZRO 2115   2013051321545442  27 35 135096 +1793   76               
          99 000ZRO 2115   2013051321551883  27 35 133534 +3701   46 S+023 02      
          99 000ZRO 2115   2013051321553264  27 35 132058 +4959   66 
                  
    My orbit fitted to all the obs, using a rather simple gravity model is:
    
    1 00000U 99000@   13127.89425000  .00008000  00000-0  00000+0 0    00
    2 00000  97.3300 203.1200 0029000  88.7900 271.5422 15.31724000    01
    (I am sure McCants or Molczan could do better)
    
    Currently visible from latitudes N of 45deg, in the evening.
    
    Mike Waterman      staradmike@yahoo.co.uk
    Site Yateley = COSPAR 2115 =  51.3286N  0.7950W  75m (reference OSGB36). 		 	   		  
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