该小组还说他们发现了一颗质量是地球的7.5倍的行星，以9.5天为一个公转周期，绕着HD 181433号恒星转动。
The team also said they found a planet 7.5 times the mass of Earth orbiting the star HD 181433 in 9.5 days.
“开普勒-22b”与其所在星系母恒星之间的距离比日地距离要短约15%，公转周期约为290个地球日。不过，母恒星所发射出的光能量也要比太阳弱25%。
Kepler 22-b lies at a distance from its sun about 15% less than the distance from the Earth to the Sun, and its year takes about 290 days.
它的体积是木星的10倍，公转周期少于24小时，而且正沿着螺旋轨道奔向它所属的恒星表面，那里灼热无比。
It is 10 times the size of Jupiter, orbits its own star in under 24 hours and should soon be spiralling into the surface of its searingly-hot sun.
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