Halo CME detection alert from the SIDC/RWC Belgium

:Issued: 2012 May 17 2117 UTC
:Product: documentation at http://www.sidc.be/products/cactus
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# HALO CME ALERTS from the SIDC (RWC-Belgium), generated by CACTUS   #
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  A halo or partial-halo CME was detected with the following characteristics:
  
            t0      | dt0| pa | da |  v  |  dv | minv| maxv|
034|2012/05/17 01:48| 06 | 144| 360| 1201| 0477| 0128| 1953
http://www.sidc.be/cactus/cactuslinkprovider.php?id=48976&action=redirect&output=detail
041|2012/05/17 15:24| 02 | 114| 206| 0416| 0045| 0312| 0504
http://www.sidc.be/cactus/cactuslinkprovider.php?id=48988&action=redirect&output=detail
  
Details can be found here: http://www.sidc.oma.be/cactus/out/latestCMEs.html
  
      t0: onset time, earliest indication of liftoff
     dt0: duration of liftoff (hours)
      pa: principal angle, counterclockwise from North (degrees)
      da: angular width of the CME (degrees), 
       v: median velocity (km/s)
      dv: variation (1 sigma) of velocity over the width of the CME
   mindv: lowest velocity detected within the CME
   maxdv: highest velocity detected within the CME
  
  
  
  This message is sent whenever a CME wider than 150 degrees is detected by cactus.
 
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