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TRAPPIST-1
, - ! style="background-color: #FFFFC0; text-align: center;" colspan="2", Characteristics , - style="vertical-align:top" ! style="text-align:left" , Evolutionary stage , Main sequence , - style="vertical-align:top" ! style="text-align:left" , Spectral type , M8V , - style="vertical-align:top" ! style="text-align:left" , Apparent magnitude (R) , , - style="vertical-align:top" ! style="text-align:left" , Apparent magnitude (I) , , - style="vertical-align:top" ! style="text-align:left" , Apparent magnitude (J) , , - style="vertical-align:top" ! style="text-align:left" , Apparent magnitude (H) , , - style="vertical-align:top" ! style="text-align:left" , Apparent magnitude (K) , , - style="vertical-align:top" ! style="text-align:left" , V−R , 2.332 , - style="vertical-align:top" ! style="text-align:left" , R−I , 2.442 , - style="vertical-align:top" ! style="text-align:left" , J−H , 0.63 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRAPPIST-1e
TRAPPIST-1e is a Terrestrial planet, rocky, close-to-Earth-sized exoplanet orbiting within the habitable zone around the ultracool dwarf star TRAPPIST-1, located away from Earth in the constellation of Aquarius (constellation), Aquarius. Astronomers used the transit method to find the exoplanet, a method that measures the dimming of a star when a planet crosses in front of it. The exoplanet was one of seven discovered orbiting the star using observations from the Spitzer Space Telescope. Three of the seven (''e'', ''f'', and ''g'') are in the habitable zone/"goldilocks" zone. TRAPPIST-1e is similar to Earth's mass, radius, density, gravity, temperature, and stellar flux. It is also confirmed that TRAPPIST-1e lacks a cloud-free hydrogen-dominated atmosphere, meaning it is more likely to have a compact atmosphere like the terrestrial planets in the Solar System. In November 2018, researchers determined that of the seven exoplanets in the multi-planetary system, TRAPPIST-1e has th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
