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WASP-2b

WASP-2b
太陽系外行星 太陽系外行星列表
母恆星
母恆星 WASP-2
星座 海豚座
赤经 (α) 20h 30m 54s
赤纬 (δ) +06° 25′ 46″
距離493 ly (151 pc)
光譜類型 K1V
軌道參數
半長軸 (a) 0.0307 ± 0.0011 AU
公轉週期 (P) 2.152226 ± 0.00004 d
軌道傾角 (i) 87 ± 3°
近星點時間 (T0) 2453991.5146 ± 0.001 JD
物理性质
质量(m)0.88 ± 0.11 MJ
半径(r)1.04 ± 0.06 RJ
密度(ρ)1038 kg m-3
表面重力(g)1.92 g
温度 (T) 2200 ± 200 K
發現
發現時間 2006
發現者 Cameron et al. (SuperWASP)
發現方法 凌日法
發現地點 南非
發表論文 出版

WASP-2b是一個環繞著WASP-2太陽系外行星,距離地球500多光年遠,位在海豚座。根據觀測到它的質量和半徑,它應該是一顆與木星組成相似的氣體行星,但他與木星不一樣的一點是,這跟目前發現的太陽系外行星一樣,他離它的母恆星很近,而且表面溫度很高,因此天文學家把他歸類於熱木星

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WASP-2b
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