A new large-amplitude variable white dwarf.

A new large-amplitude ZZ Ceti star has been discovered in the Edinburgh-Cape Blue Object Survey. The light curve is non-sinusoidal, with a peak-to-peak variation ranging from 0.06 to 0.24 mag in white light. Six nights of observation show a multiple-period structure, with periods of between 800 and 1000 s. The principal frequency at f - 1.101 mHz is present on most nights observed with variable amplitude, probably caused by the presence of multiple close frequencies.