[vsnet-campaign-be 147] Omega CMa bright outburst

["Sebastian Otero" <varsao@fullzero.com.ar>]

Dear friends:
                   Omega Canis Majoris is in a bright outburst. The outburst
started by the end of march 2001, when the star brightened slowly but
steadily from 4.1. When the observing season came to an end at the beginning
of June, the star was at 3.82.
                   Last week, a colleague of mine, Enzo de Bernardini (BED)
from Martinez, Buenos Aires, Argentina, reported that the star was at 3.6.
                   I observed it last night and can confirm that omega CMa
is in a full outburst:

CMAomega    20011019.229    JD2452201.729    3.67    OSE

You can see my lightcurve of the star and Hipparcos' lightcurve for the
outburst of 1992-1993 (there is a gap in the same point as in the current
outburst!).
They are at:   http://ar.geocities.com/varsao/Curvas_Ome_CMa.htm
There is also a chart to observe the variable:
http://ar.geocities.com/varsao/Carta_ome_CMa.htm

If my predictions based on (but with T0 according to the maxima observed
visually recently) Harmanec's 34.7 days -period  are OK, the star may
brighten a little bit more and reach its maximum ever in 20 days. (or maybe
it has already reached it when out of sight !!:-((  )
Let's see.

Cheers,
Sebastian.



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