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Seven Long-Period Planet Candidates

31 Dec 2015, 23:00 UTC
Seven Long-Period Planet Candidates
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Using archival data from NASA’s Kepler space telescope, Wang et al. (2015) present the validation of seven long-period planet candidates that have planet confidence over 99.7 percent. These long-period planet candidates include 3 single-transit planets (KIC-3558849c, KIC-5951458b, and KIC-8540376d), 3 planets with double transits (KIC-8540376c, KIC-9663113c, and KIC-10525077b), and 1 planet with 4 transits (KIC-5437945c). All seven long-period planet candidates orbit stars hotter than the Sun in orbits with periods ranging from ~100 to over ~1000 days.KIC-3558849c was observed to transit its host star once. Based on its transit duration and the properties of its host star, the planet’s orbital period is estimated to be between 1311 to 1708 days and the radius of the planet is between 6.0 to 7.9 Rᴇ, where Rᴇ denotes the Earth’s radius. The host star of KIC-3558849c has 0.87 to 1.09 times the mass and 0.90 to 1.11 times the radius of the Sun, and the star’s surface temperature is ~6175 K. KIC-3558849c is validated with a planet confidence of 99.7 percent. This planetary system has another planet candidate identified as KIC-3558849b. Its orbital period is 160.85 days and it measures ~2.35 Rᴇ.KIC-5951458b is a long-period planet that was observed to transit its host ...

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