Using statistical and analytical analysis, Barclay et al. (2015) show the five planets most likely orbit Kepler-296A, the primary star. The five planets around Kepler-296A are termed “super-Earths” because they are somewhat larger in size than Earth. Moving out from Kepler-296A, the five planets are identified as Kepler-296Ac, b, d, e and f.
- Planet c: orbital period of 5.8 days, 2.00 times Earth’s diameter and 14.8 times Earth’s insolation.
- Planet b: orbital period of 10.9 days, 1.61 times Earth’s diameter and 6.5 times Earth’s insolation.
- Planet d: orbital period of 19.9 days, 2.09 times Earth’s diameter and 2.90 times Earth’s insolation.
- Planet e: orbital period of 34.1 days, 1.53 times Earth’s diameter and 1.41 times Earth’s insolation.
- Planet f: orbital period of 63.3 days, 1.80 times Earth’s diameter and 0.62 times Earth’s insolation.
Of the five planets, Kepler-296Ae and Kepler-296Af, respectively, receive 1.41 and 0.62 times the amount of insolation Earth gets from the Sun. This amount of insolation places both planets within or at least close to the habitable zone around Kepler-296A. Based on the definition by Kopparapu et al. (2013), Kepler-296f, the outermost of the five planets, is probably a better candidate for a habitable planet since it falls in the “conservative” habitable zone, while Kepler-296e falls into the “optimistic” habitable zone.
- Barclay et al. (2015), “The Five Planets in the Kepler-296 Binary System All Orbit the Primary: A Statistical and Analytical Analysis”, arXiv:1505.01845 [astro-ph.EP]
- Kopparapu et al. (2013), “Habitable Zones Around Main-Sequence Stars: New Estimates”, arXiv:1301.6674 [astro-ph.EP]