TRAPPIST-1f
TRAPPIST-1f, also designated as 2MASS J23062928-0502285 f, is an exoplanet, likely rocky, orbiting within the habitable zone 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.
Artist's impression of TRAPPIST-1f. (February 2018) | |
| Discovery | |
|---|---|
| Discovered by | Michaël Gillon et al. |
| Discovery site | Spitzer Space Telescope |
| Discovery date | 22 February 2017 |
| Transit | |
| Orbital characteristics | |
| 0.03849±0.00033 AU | |
| Eccentricity | 0.01007±0.00068 |
| 9.207540±0.000032 d | |
| Inclination | 89.740°±0.019° |
| 368.81°±3.11° | |
| Star | TRAPPIST-1 |
| Physical characteristics | |
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) |
It was one of four new exoplanets to be discovered orbiting the star in 2017 using observations from the Spitzer Space Telescope.
The planet is likely tidally locked, and has been depicted as an eyeball planet in artistic impressions by NASA.
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