  We present 5 filter photometry of 21 carbon stars, 15 asteroids, 15
cataclysmic variables, 6 metal-poor stars, 5 Cepheids, 1775 field stars, blue
horizontal branch (BHB) stars and RR Lyrae stars in the globular clusters M 15
and M 2, two primary standards, and 19 secondary standards. The photometry was
carried out using a filter set identical to that which will be used for the
Sloan Digital Sky Survey. We find that carbon stars, CVs, R-type, J-type, and
V-type asteroids, BHB stars, and RR Lyr stars should be identifiable on the
basis of SDSS photometry alone, while Cepheids, metal-poor stars, and many
types of asteroids are indistinguishable from the stellar locus of field stars.
