GJ 1132 b

GJ 1132 b (Gliese 1132 b) is an extra-solar planet orbiting M-type star GJ 1132 (Gliese 1132), ~13 parsecs from Earth, and somewhat close to Earth-size (an exo-Earth), i.e., 1.7 Earth-masses and 1.1 Earth radius. It is a transiting planet discovered by the MEarth Project in 2015. It is of interest for being sufficiently close to observe, and though not in the habitable zone, still cool enough (410 K) to retain an atmosphere, which can be investigated using transmission spectroscopy. Characteristics:

• Host star: GJ 1132 (Gliese 1132).
• Discovery: by the transit method in 2015.
• 13 pc - distance.
• 0.0153 AU - orbital radius.
• 1.6 days - orbital period.
• 1.1 - radius in Earth radii.
• 1.7 - Earth masses.
• 409 K - predicted temperature.