This discovery prompted the search for other planets, such as the orbital distortions attributed to gravitational perturbations affecting the Mercury. However, none of them have not been found, and, ultimately, it was concluded that the orbital distortion observed in the Mercury, due to relativistic effects. Nevertheless, this method of prediction (logical calculations) of the planets on the basis of orbital "oddities" planet, perhaps first used outside of our solar system. Extrasolar planet, known as TrES-2b, is an exceptional case, being one of the known extrasolar planets, whose orbital plane is almost completely coincides with the ray observations from the Earth. This fact implies that each time around the star, the planet would appear, passing across the disk of stars. While we can not expand this cd on the shelves, he reveals the characteristic decrease in the star brightness, which, in turn, provides additional information about the system, such as' very precise calculations of the radii of the stars and planets (the relatively large axis) and the angle of inclination of the orbital plane of the planet. " This additional information allows for precise calculations of the orbital parameters that are necessary for predicting future transits. A group of German astronomers conducted surveillance of TrES-2 in 2006 and 2008 to develop his idea of the planet's orbit.

However, when they continued observation in 2009, we found a significant change of parameters such as angle of inclination plane of the orbit and orbital period. Although such a change in the parameters could be explained by the migration of planets, astronomers did not expect that this phenomenon can occur in such a short span of time scale. Except addition, the change could explain the "strange" form of the primary star, but the degree to which would have to flatten the star at the equator, was unrealistically high, given the slow speed of TrES-2. The study authors suggested a third option: 'existence of the third celestial body in the form of another planet would give quite a plausible explanation. " Although this explanation is totally unsubstantiated, it offers easily verifiable scenario.

If the orbital plane of the system almost coincides with the ray observations from the Earth, it is the most ideal situation to try to detect the planet using the radial velocity of the parent star. Authors go so far that even offer a range of cycle times of the potential of the planet, for which the possible effects observed. They say: 'planet mass in a mass of Jupiter and the orbital period of 50 to 100 days – quite sufficient conditions to cause the observed changes in mood. " Moreover, the authors note that knowledge of the existence of several similar systems with one planet and another near a massive planet that refers to the longer orbit. 'The system hip 14810 has a near-planet with orbital period of 6.6 days and a little more light planet with orbital period of 147 days, in the hd 160691 planet has a short-range period of 9.6 days, and two long planets with masses of Jupiter, is known to have periods of 310 and 643 days. "