GJ 887 c

It circles Lacaille 9352 once every 21.8 days, 0.12 AU out: about 3.2 times closer than Mercury is to the Sun.

Found in 2020 by the radial velocity method, which measures the star's wobble. That gives a minimum mass, so it could be heavier.

Sources

1. NASA Exoplanet Archive, Planetary Systems Composite Parameters (queried 28 Oct 2026)

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