TRAPPIST-1 h

TRAPPIST-1 h Image

Description: TRAPPIST-1h, also designated as 2MASS J23062928-0502285 h, is an exoplanet orbiting around the ultra-cool dwarf star TRAPPIST-1, located 40.7 light-years away from Earth in the constellation Aquarius. It was one of four new exoplanets to be discovered orbiting the star in 2017 using observations from the Spitzer Space Telescope. In the following years, more studies were able to refine its physical parameters.

Physical Properties

Mass (Jupiter mass): 0.00102571070684692 MJ

Radius (Jupiter radius): 0.067 RJ

Density: 4.16278 g/cm³

Equilibrium Temperature: 171.7 K

Orbital Parameters

Orbital Period: 18.772866 days

Semi-major Axis: 0.06189 AU

Eccentricity: 0.00567

Inclination: 89.805°

Host Star Properties

Host Star: TRAPPIST-1

Spectral Type: Unknown

Temperature: 2566.0 K

Stellar Mass: 0.09 M☉

Stellar Radius: 0.12 R☉

Discovery Information

Planet Letter: h

Object ID: 3.11993

Host ID: 2.103803

Discovery Date: 2016-05

Discovery Year: 2017

Discovery Method: Transit

Discovery Locale: Multiple Locales

Discovery Facility: Multiple Observatories

Discovery Instrument: Multiple Instruments

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