High speed photometry of the new AM CVn star in Hya ( previously known as SN2003aw ) , spectroscopically identified by Chornock & Filippenko , shows it to have a superhump period of 2041.5 \pm 0.3 s. We find a range of brightness from V \sim 16.5 to 20.3 , presumably caused by variations in the rate of mass transfer .
In the intermediate state the system cycles in brightness with a period of \sim 16 h and range \geq 0.4 mag .
There are sidebands to the principal frequencies in the Fourier transform which have constant frequency difference from the superhump harmonics .