[vsnet-campaign-dn 2192] 1RXP J113123+4322.5: rapid fading stopped

[Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>]

1RXP J113123+4322.5: rapid fading stopped

    Observations at Kyoto revealed that the object entered 
the rapid fading phase between March 15-16.  The average superhump 
period during the plateau phase is calculated to be 0.065069(4)d 
using 4572 photometric points.  This period is slightly shorter than
the previously reported one, and indicates that the superhump period 
increased in the early plateau phase, and then, decreased in the late 
phase.  More detailed O-C analysis of humps is now ongoing.  

    The rapid fading stopped when the object became ~2mag fainter 
and still above the quiescent level.  During March 16-17, the object 
gradually faded at a rate of 0.1mag/d.  In conjunction with the 
short period and the period increase of superhumps, this phenomenon 
is similar to large-amplitude SU UMa-type dwarf novae.  Follow-up 
monitorings is important to detect possible rebrightenings.

Regards,
Makoto Uemura

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