HD 17156b: A Transiting Planet with a 21.2 Day Period and an Eccentric Orbit

M. Barbieri, R. Alonso, G. Laughlin +8

We report the detection of transits by the 3.1 M_Jup companion to the V=8.17 G0V star HD 17156. The transit was observed by three independant observers on Sept. 9/10, 2007 (two in…