[vsnet-alert 5344] RX J2315.5-3049 superhump detected

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

RX J2315.5-3049 superhump detected

    From our preliminary reduction of tonight run on RX J2315.5-3049,
we detect clear superhumps in ~3 hours light curve. 
The period of the superhumps is about 0.078 d and the amplitude is about 
0.3mag.

    In [vsnet-alert 5091], T. Augusteijn reported that their photometry and
spectroscopy at quiescence yield an orbitral period of 0.058 d.  
They commented similarity to WZ Sge-type due to this short orbital period.  
If it is the case, the preliminary superhump period we reported above 
is 30 % longer than the orbital period.  The object may be a strange WZ Sge 
type or a normal SU UMa type, and in the latter case, 0.058d-period may 
contain a large error.

    Follow-up observations are strongly urged.  We will observe the next 
night with Ouda 60-cm telescope if the weather is good. 

Regards,
M. Uemura, T. Kato, H. Iwamatsu
at Ouda observatory

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