TRAPPIST-1f
Earth-size exoplanet orbiting TRAPPIST-1 / From Wikipedia, the free encyclopedia
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TRAPPIST-1f, also designated as 2MASS J23062928-0502285 f, is an exoplanet, likely rocky,[2] orbiting within the habitable zone[5] around the ultracool dwarf star TRAPPIST-1, located 40.7 light-years (12.5 parsecs) away from Earth in the constellation of Aquarius. The exoplanet was found by using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured.
Discovery[1] | |
---|---|
Discovered by | Michaël Gillon et al. |
Discovery site | Spitzer Space Telescope |
Discovery date | 22 February 2017 |
Transit | |
Orbital characteristics[2] | |
0.03849±0.00033 AU | |
Eccentricity | 0.01007±0.00068[3] |
9.207540±0.000032 d | |
Inclination | 89.740°±0.019° |
368.81°±3.11°[3] | |
Star | TRAPPIST-1 |
Physical characteristics[2] | |
Mean radius | 1.045+0.013 −0.012 R🜨 |
Mass | 1.039±0.031 M🜨 |
Mean density | 5.009+0.138 −0.158 g/cm3 |
0.951±0.024 g 9.32±0.24 m/s2 | |
Temperature | Teq: 217.7±2.1 K (−55.5 °C; −67.8 °F)[4] |
It was one of four new exoplanets to be discovered orbiting the star in 2017 using observations from the Spitzer Space Telescope.[1]
The planet is likely tidally locked, and has been depicted as an eyeball planet in artistic impressions by NASA.