SY Vol: Large amplitude dwarf nova?

R. Stubbings reported that the suspected dwarf nova SY Vol experienced a bright outburst (14.2mag) on July 23. The quiescent counterpart seems to be USNO0150.05620695 whose magnitude is about 22. The object is also has a likely ROSAT detection (vsnet-campaign 390). The observations by R. Stubbings showed it was still bright on July 27 (vsnet-campaign 399). Considering the large-amplitude of the outburst, the star may be an SU UMa-type dwarf nova undergoing a rare superoutburst The outburst has faded since July 31 (vsnet-campaign-dn 74). SY Vol was again in outburst at 14.4mag on September 29, as reported by R. Stubbings (vsnet-campaign-dn 176). The fading from the outburst was observed on October 8 by R. Stubbings (vsnet-campaign-dn 194). The another outburst was detected by R. Stubbings on October 27 at the magnitude of 14.5 (vsnet-campaign-dn 218). SY Vol again experienced an outburst on November 22 as reported by R. Stubbings at the magnitude of 14.2 (vsnet-campaign-dn 251). The fading from the outburst was observed in 22 - 23 November (vsnet-campaign-dn 252).

General Information of This Object

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