Halo CME detection alert from the SIDC/RWC Belgium

:Issued: 2013 May 18 0317 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|
041|2013/05/17 09:12| 06 | 350| 322| 0726| 0347| 0145| 1669
  
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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