AK Cnc : Unexpectedly short supercycle ?

The last confirmed outburst of this SU UMa-type dwarf nova with a short orbital period (95 min) occrred in 2000 February, which was a superoutburst. As reported by E. Muyllaert on 2001 February 13, it experienced a relatively rare outburst whose amplitude reached to 13.6 mag (vsnet-campaign 764). The Kyoto team reported a rapid decline on February 15, indicating it was a normal outburst (vsnet-campaign-dn 489).

The next outburst was detected on April 12 by R. Stubbings at 13.4mag (vsnet-campaign 849). This outburst showed a gradual fading and its duration for at least 9 days, which indicates the outburt is superoutburst. The object faded around April 23 (vsnet-campaign-dn 698).

On November 10, the object experienced a bright (13.2mag) outburst as reported by M. Simonsen (vsnet-campaign 1222). A possible rapid fading from the outburst was reported on November 14 (vsnet-campaign-dn 1897), and then, the object again brightened. The early brightening may be precursor of this possible superoutburst (vsnet-campaign-dn 1904). The outburst was reported to continue at least until November 21 (vsnet-campaign-dn 1927).

A supercycle from these two probable superoutbursts is relatively short compared with the previous one.

Other related article: vsnet-campaign-dn 481, 483, 484, 488, 497, 501, 644, 648, 658, 669, 674, 675, 680, 1872, 1918,

General Information on This Object