  The G0V dwarf TrES-2A, which is transited by a hot Jupiter, is one of the
main short-cadence targets of the Kepler telescope and, therefore, among the
photometrically best-studied planetary systems known today. Given the
near-grazing geometry of the planetary orbit, TrES-2 offers an outstanding
opportunity to search for changes in its orbital geometry. Our study focuses on
the secular change in orbital inclination reported in previous studies. We
present a joint analysis of the first four quarters of Kepler photometry
together with the publicly available ground-based data obtained since the
discovery of TrES-2b in 2006. We use a common approach based on the latest
information regarding the visual companion of TrES-2A and stellar limb
darkening to further refine the orbital parameters. We find that the Kepler
observations rule out a secular inclination change of previously claimed order
as well as variations of the transit timing, however, they also show slight
indication for further variability in the inclination which remains marginally
significant.

Earth and Planetary Astrophysics