2013ApJ...762...55R

We present observations of the full 2010 January transit of HD80606b from the Canadian microsatellite, Microvariability and Oscillations of Stars. By employing a space-based telescope, we monitor the entire transit, thus limiting systematic errors that result from ground observations. We determine measurements for the planetary radius (R_p= 0.987±0.061 R_Jup) and inclination (i = 89.°283±0.024) by constraining our fits with the observed parameters of different groups. Our measured mid-transit time of 2455210.6449 ±0.0034 HJD is consistent with the 2010 Spitzer results and is 20 minutes earlier than predicted by groups who observed the 2009 June transit.