  We photometrically observed the 2003 June superoutburst of GO Gom. The mean
superhump period was 0.063059(13) d. The resultant data revealed that (1) the
obtained light curve contained a precursor, (2) a plateau stage of the object
lasted 8 days, which is remarkably shorter than that of ordinary SU UMa-type
dwarf novae, and (3) the amplitude of the superoutburst was less than 5 mag,
which is unpredictably small when taking into account the fact that the
supercycle of GO Com is about 2800 days. In order to explain these anomalies, a
mass elimination process from the accretion disk, such as evaporation, may play
an important role.
