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New analysis of the nearby LHS 1140 system: LHS 1140 b is either a temperate mini-Neptune or a water world

publication date24. 10. 2023 (accepted)
A new analysis of LHS 1140 b and c, two temperate exoplanets orbiting a nearby star, reveals that LHS 1140 b is likely a mini-Neptune with a thin H/He envelope or a water world. LHS 1140 c remains consistent with a rocky planet, but there is a discrepancy in the transit depths measured by Spitzer and TESS. The candidate LHS 1140 d is not detected, and is attributed to stellar activity.

Relevant stars in the catalog


LHS 1140
0.18 M☉ 48.8 ly
New analysis of the nearby LHS 1140 system: LHS 1140 b is either a temperate mini-Neptune or a water world

Scientific study

study iconNew Mass and Radius Constraints on the LHS 1140 Planets -- LHS 1140 b is Either a Temperate Mini-Neptune or a Water World external link

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