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It is also a circumbinary planet, orbiting around a binary system composed of the pulsar PSR B1620-26 A and the white dwarf WD B1620-26. Methuselah同时也是一颗circumbinary行星，它围绕着一个双星系统旋转，这个双星系统由脉冲星PSR B1620-26 A和白矮星WD B1620-26组成。