SMC 018136,也稱為PMMR 37,是一顆在小麥哲倫星系的M型超巨星,表面溫度為3,575K,徑向速度185.7Km/s。
SMC 018136是一顆光譜類型M3.5Ia的紅超巨星,表面溫度為3,575K,總光度超過太陽的20萬倍,半徑超過太陽的1,300倍,使它成為迄今所知的最大恆星之一。如果它在太陽的位置上,它的光球至少會吞噬到木星的軌道。
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