Photometry of the Magnetic White Dwarf SDSS 121209.31+013627.7
  The results of 27 hours of time series photometry of SDSS 121209.31+013627.7 are presented. The binary period established from spectroscopy is confirmed and refined to 0.061412 d (88.43 minutes). The photometric variations are dominated by a brightening of about 16 mmag, lasting a little less than half a binary cycle. The amplitude is approximately the same in V, R and white light. A secondary small brightness increase during each cycle may also be present. We speculate that SDSS 121209.31+013627.7 may be a polar in a low state. 
C. Koen (1) and P. F. L. Maxted (2) ((1) University of the Western   Cape, South Africa, (2) Keele University, UK)