※ 引述《Shuoger (修葛爾)》之銘言:
: 整理一下Kepler-452b的小檔案:
: 特殊意義:適居帶中首顆尺寸接近地球且繞行類日恆星的行星。
: "Kepler-452b is the first near-Earth-Size planet
: in the habitable zone of a star very similar to the sun."
: Kepler-452b
: ◎ 所在位置:天鵝座,距太陽系約1,400光年處
: ◎ 體積:約較地球大60%
: ◎ 質量:未知
: ◎ 組成物質:未知
: ◎ 分類:超級地球
: ◎ 繞行恆星:Kepler-452
: ◎ 公轉週期:385日
: ◎ 軌道半長軸:1.05 AU (天文單位,即地球與太陽的平均距離)
: ◎ 恆星光譜:G2 (與太陽同為黃色恆星,也具有相似的溫度與質量)
: ◎ 恆星年齡:約60億歲,(較太陽年長15億歲)
: 其餘亮點:
: 1. 依據先前的研究,像Kepler-452b這樣尺寸的行星有相當可能具有岩石地表(類地行星)
: "previous research suggests that planets the size of Kepler-452b
: have a better than even chance of being rocky."
: 2. Kepler-452b從恆星所接收的能量略高於地球從太陽所接收的10%。
: "Today Kepler-452b is receiving 10 percent more energy from its parent star
: than the Earth is from the Sun."
: 3. 推測質量可能是地球的5倍。(現場是說2倍)
: "However, since it is 60 percent bigger than Earth, it is likely to be
: approximately five Earth masses, ..."
: Jon Jenkins: "Kepler 452B is around twice the mass of Earth."
: 4. 表面可能擁有液態水、活躍的火山以及行光合作用的植物。
: "Kepler could also have liquid water, active volcanoes and photosynthesising
: plants on its surface."
: 以上。
: 出處:
: 1. Kepler-452b: Earth's Bigger, Older Cousin