62e is 1.61 times Earth’s size, circles the star in 122.4 (Earth) days. 62f is 1.4 times the size of Earth, and orbits its star in 267.3 days. Previously, the smallest planet with known radius inside a habitable zone was Kepler-22b, with a radius of 2.4 times that of the Earth. ...
Kepler-62e and f: Possibly Life-Supporting 'Water Worlds' NASA/Ames/JPL-Caltech Kepler-62e and 62f are perhaps the most promising life-hosting candidates yet found beyond our solar system. The planets, which are 1.6 and 1.4 times the size of Earth, respectively, may both be water worlds...
While exceptionally useful for producing a uniform catalogue, these algorithms sometimes misclassify planet candidates as a false positive, as is the case of Kepler-62f. In particularly valuable cases, i.e., when a small planet has been found orbiting in the habitable zone (HZ), it is ...
Sidereal period, the time required for a celestial body within the solar system to complete one revolution with respect to the fixed stars—i.e., as observed from some fixed point outside the system. The sidereal period of a planet can be calculated if i
at NASA's Ames Research Center at Moffett Field, Calif. Borucki has been working on the mission for 17 years. "Everything about the mission is optimized to find Earth-size planets with the potential for life, to help us answer the question -- are Earths bountiful or is our planet unique...
开普勒-452b(Kepler-452 b,KOI-7016.01)是一颗围绕天鹅座的G型主序星开普勒-452运转的太阳系外行星,距地球约1402光年(430秒差距)。 开普勒太空望远镜对它进行了观测,美国国家航空航天局(NASA)于2015年7月23日宣布了对其的发现。开普勒-452b是发现的第一颗潜在的超级地球岩质行星,在一颗类太阳恒星的适居...
Three systems have planet candidates that are near mean motion commensurabilities---two near 2:1 and one just outside 5:2. We discuss the implications that multitransiting systems have on the distribution of orbital inclinations in planetary systems, and hence their dynamical histories; as well ...
R. Ciardi, Most sub-arcsecond companions of Kepler exoplanet candidate host stars are gravitationally bound, Astrophys. J. 795, p. 60, 2014. doi:10.1088/0004-637X/795/1/60Horch, E. P., Howell, S. B., Everett, M. E., & Ciardi, D. R. 2014, arXiv:1409.1249...
We find no compelling evidence for an exomoon around any of the seven KOIs but constrain the satellite-to-planet mass ratios for each. For four of the seven KOIs, we estimate a 95% upper quantile of M_S/M_P<0.04, which given the radii of the candidates, likely probes down to sub-...