K2-2 b: light curves and radial velocities
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K2-2 b/HIP 116454 b, the first exoplanet discovery by K2 during its Two-Wheeled Concept Engineering Test, is a sub-Neptune (2.5+/-0.1R_{Earth}, 9.7+/-1.2M{Earth}_) orbiting a...
K2-2 b/HIP 116454 b是K2任务在其双轮概念工程试验（Two-Wheeled Concept Engineering Test）阶段发现的首颗系外行星，属于次海王星（sub-Neptune），其半径为2.5±0.1倍地球半径，质量为9.7±1.2倍地球质量，环绕一颗……
