Description
On 2009 June 15 UT the transit of TrES-2b was detected using the University of Arizona's 1.55m Kuiper Telescope with 2.0-2.5 millimag rms accuracy in the I band. We find a central transit time of T_c_=2454997.76286+/-0.00035HJD, an orbital period of P=2.4706127+/-0.0000009 days, and an inclination angle of i=83.92{deg}+/-0.05{deg}, which is consistent with our re-fit of the original I-band light curve of O'Donovan et al. where we find i=83.84{deg}+/-0.05{deg}. We calculate an insignificant inclination change of {Delta}i =-0.08{deg}+/-0.07{deg} over the last three years, and as such, our observations rule out, at the ~11{sigma} level, the apparent change of orbital inclination to i_predicted_=83.35{deg}+/-0.1{deg} as predicted by Mislis & Schmitt and Mislis et al. for our epoch. Moreover, our analysis of a recently published Kepler Space Telescope light curve for TrES-2b finds an inclination of i=83.91{deg}+/-0.03{deg} for a similar epoch. These Kepler results definitively rule out change in i as a function of time. Indeed, we detect no significant changes in any of the orbital parameters of TrES-2b.
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