Geoff Marcy, UC Berkeley

Planets Around Other Suns

A dozen planets have been found around GKM Main Sequence Stars, all
revealed by Keplerian velocities of their host stars.  
Jupiter-Mass planets occur around 5% of stars within 2 AU, 
and their maximum mass is ~4 M_JUP.  
Brown Dwarf companions (M = 10-80 M_JUP) occur rarely (<1%).  
Planetary orbits are often smaller than Mercury's orbit and
are generally eccentric.  The formation history of giant planets probably
includes viscous migration inward and planet-planet scattering.