Big fish, small fish: Two New Ultra-Faint Satellites of the Milky Way
  We report the discovery of two new Milky Way satellites in the neighboring
constellations of Pisces and Pegasus identified in data from the Sloan Digital
Sky Survey. Pisces II, an ultra-faint dwarf galaxy lies at the distance of ~180
kpc, some 15 degrees away from the recently detected Pisces I. Segue 3, an
ultra-faint star cluster lies at the distance of 16 kpc. We use deep follow-up
imaging obtained with the 4-m Mayall telescope at Kitt Peak National
Observatory to derive their structural parameters. Pisces II has a half-light
radius of ~60 pc, while Segue 3 is twenty times smaller at only 3pc.
