WD1953-011 is an isolated , cool ( 7920 \pm 200 \mathrm { K } , Bergeron , Legget \& Ruiz , 2001 ) magnetic white dwarf ( MWD ) with a low average field strength ( \sim 70 \mathrm { kG } , Maxted et al .
2000 ) and a higher than average mass ( \sim 0.74 \mathrm { M } _ { \odot } , Bergeron et al .
2001 ) .
Spectroscopic observations taken by Maxted et al .
2000 showed variations of equivalent width in the Balmer lines , unusual in a low field white dwarf .
Here we present V band photometry of WD1953-011 taken at 7 epochs over a total of 22 months .
All of the datasets show a sinusoidal variation of approximately 2 % peak-to-peak amplitude .
We propose that these variations are due to a star spot on the MWD , analogous to a sunspot , which is affecting the temperature at the surface , and therefore its photometric magnitude .
The variations have a best-fit period over the entire 22 months of 1.4418 days , which we interpret as the rotational period of the WD .