  Early data taken during commissioning of the SDSS have resulted in the
discovery of a very cool white dwarf. It appears to have stronger collision
induced absorption from molecular hydrogen than any other known white dwarf,
suggesting it has a cooler temperature than any other. While its distance is
presently unknown, it has a surprisingly small proper motion, making it
unlikely to be a halo star. An analysis of white dwarf cooling times suggests
that this object may be a low-mass star with a helium core. The SDSS imaging
and spectroscopy also recovered LHS 3250, the coolest previously known white
dwarf, indicating that the SDSS will be an effective tool for identifying these
extreme objects.
