RX J0944.5+0357 : New dwarf nova, no periodic modulations?
T. Watanabe first detected an outburst (13.2mag) of this
ROSAT-selected cataclysmic variable on January 4. This finding
established its dwarf nova nature. The object has been monitored since
1999 March, yielding no other outburst (typical limiting magnitude
13.5). The CV is listed in New CVs from "The Hamburg/RASS Catalogue of
Optical Identifications". The quiescent magnitude is 16.3
The light curve obtained by S. Kiyota on January 5 showed
small-amplitude irregular fluctuations superimposed on a gradual fading.
There was no superhump-like modulation up to an amplitude of 0.1 mag.
The object faded by nearly 1 mag between January 5 and 6.
T. Kato commented that the rapid fading suggests that the object may be
a short-period system, or even an SU UMa-type star in normal outburst
P. Schmeer reported its second ever recorded outburst reaching
13.1mag on June 9
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