Most space telescope photometry of the 2010 January transit of extrasolar planet HD80606b

Abstract

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 (Rp = 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. © 2013. The American Astronomical Society. All rights reserved.