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Exoplanet · Lalande 21185

GJ 411 b

Orbit0.079 AU
Year12.9 days
Mass≥ 2.69 M⊕
Temperature~350 K (estimated)

It circles Lalande 21185 once every 12.9 days, 0.079 AU out: about 4.9 times closer than Mercury is to the Sun.

Found in 2019 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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