(PSR B1957+12, PSR J1300+1240)
(pulsar with first discovered planet system)
PSR 1957+12 (or PSR B1957+12 or PSR J1300+1240)
is a pulsar and the first star for which an
extra-solar planet was discovered, through pulsar timing,
which occurred in 1992.
It is a planetary system with at least three planets,
PSR 1957+12 a, b, and c.
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