 Artist's drawing of TRAPPIST-1h | |
| Discovery | |
|---|---|
| Discovery date | 22 February 2017 |
| Transit | |
| Orbital characteristics | |
| ~0.06189 | |
| Eccentricity | 0.00567 |
| 18.772866 (± 0.000214) d | |
| Inclination | 89.805° (± 0.013°) |
| Physical characteristics | |
Mean radius | 0.755 (± 0.014) R🜨 |
| Mass | 0.326 (± 0.020) M🜨 |
| ~0.57 g | |
TRAPPIST-1h is an extrasolar planet. It circles a ultracool dwarf star known as TRAPPIST-1. It is located 40.7 light years away from Earth in the constellation of Aquarius. Astronomers discovered the exoplanet by using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. It was one the seven exoplanets to be discovered orbiting TRAPPIST-1 using observations from the Spitzer Space Telescope.
TRAPPIST-1h is the most distant known planet in it's system. It's about 76% the size of Earth and it has roughly one third of Earth's mass.
