Kepler-16b (formally Kepler-16 (AB)-b) is associate degree extrasolar planet. it’s a Saturn-mass planet consisting of [*fr1] gas and [*fr1] rock and ice, and it orbits a star, Kepler-16, with a amount of 229 days. “It is that the initial confirmed, unambiguous example of a circumbinary planet – a planet orbiting not one, however 2 stars,” same razz Carter of the Harvard-Smithsonian Center for uranology, one in every of the invention team.
Kepler-16b was discovered victimization the area observatory aboard NASA’s astronomer orbiter. Scientists were ready to discover Kepler-16b victimization the transit technique, once they detected the dimming of 1 of the system’s stars even once the opposite wasn’t eclipsing it. what is more, length of transits and temporal order all the eclipses and transits of Kepler-16b and its stars within the system has allowed for outstandingly high exactitude within the calculations of the sizes and lots more and plenty of objects within the Kepler-16 system. The leader of Kepler-16b’s discovery team, Laurance Doyle of the SETI Institute in Mountain read, California, same of this exactitude, “I believe this can be the best-measured planet outside the system.”. for instance, Kepler-16b’s radius is understood to inside zero.3%, higher than that of the other notable exoplanet (as of Sep 2011).
Kepler-16b is additionally uncommon in this it falls within the radius that was thought to be the inner limit for planet formation in a very star system. consistent with Sara Seager, a planetary knowledgeable at the Massachusetts Institute of Technology, it had been thought that for a planet to possess a stable orbit around such a system, it might ought to be a minimum of seven times as faraway from the celebs because the stars area unit from one another. Kepler-16b’s orbit is just regarding [*fr1] that distance.
As seen from Earth, Kepler-16b ceased transiting the rheostat star in 2014, and can stop crossing the second, brighter star in 2018. After that, Kepler-16b can stay undetectable victimization the transit technique till around 2042.
Kepler-16b orbits close to the environs of the liveable zone, however it’s in all probability a superior planet with surface temperatures around −100 to −70 °C (−150 to −94 °F).