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We present extensive photometric and spectroscopic observations of PTF1J071912.13+485834.0, an outbursting AM CVn system discovered by the PalomarTransient Factory (PTF). AM CVn systems are stellar binaries with some of thesmallest separations known and orbital periods ranging from 5 to 65 minutes.They are believed to be composed of a white dwarf accretor and a(semi)-degenerate He-rich donor and are considered to be the helium equivalentsof Cataclysmic Variables. We have spectroscopically and photometricallyidentified an orbital period of 26.77 \pm 0.02 minutes for PTF1J071912.13+485834.0 and found a super-outburst recurrence time of greater than65 days along with the presence of "normal" outbursts - rarely seen in AM CVnsystems but well known in super-outbursting Cataclysmic Variables. We present along-term light curve over two super-cycles as well as high cadence photometryof both outburst and quiescent stages, both of which show clear variability. Wealso compare both the outburst and quiescent spectra of PTF1J071912.13+485834.0 to other known AM CVn systems, and use the quiescentphase-resolved spectroscopy to determine the origin of the photometricvariability. Finally, we draw parallels between the different subclasses of SUUMa-type Cataclysmic Variables and outbursting AM CVn systems. We conclude bypredicting that the Palomar Transient Factory may more than double the numberof outbursting AM CVn systems known, which would greatly increase ourunderstanding of AM CVn systems.

PTF1 J071912.13+485834.0: An outbursting AM CVn system discovered by a synoptic survey