Superhumps of CC Cancri Revisited

We observed the 2001 November superoutburst of CC Cnc. This observation makesthe first detailed coverage of a superoutburst of this object. Thebest-determined mean superhump period is 0.075518 +/- 0.000018 d, which is 2.7%longer than the reported orbital period. This fractional superhump excess is aquite typical value for a normal SU UMa-type dwarf nova, excluding thepreviously raised possibility that CC Cnc may have an anomalously largefractional superhump excess. During the superoutburst plateau, the objectshowed a decrease of the superhump period at dot(P)/P = -10.2(1.3) x 10^(-5),which is one of the largest negative period derivative known in all SU UMa-typedwarf novae.Comment: 5 pages, 5 figures, to appear in Publ. Astron. Soc. Japa