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TRAPPIST-1 TRAPPIST-1 is within the red circle in the constellation Aquarius. Observation data Epoch J2000 Equinox J2000 Constellation Aquarius Right ascension 23 h 06 m 29.368 s Declination −05° 02′ 29.04″ Apparent magnitude (V) 18.798 ± 0.082 Characteristics Evolutionary stage Main sequence Spectral type M8V Apparent magnitude (R) 16.466 ± 0.065 Apparent magnitude (I) 14.024 ± 0. ...
TRAPPIST-1d is a closely orbiting planet, with one full orbit taking just 4.05 days (about 97 hours) to complete. [7] It orbits at a distance of just 0.02228 AU from the host star, or about 2.2% the distance between Earth and the Sun. [3]
TRAPPIST-1b is a terrestrial, Earth-sized exoplanet orbiting around the ultra-cool dwarf star TRAPPIST-1, located 40.7 light-years (12.5 parsecs) away from Earth in the constellation of Aquarius. The planet was detected using the transit method , where a planet dims the host star's light as it passes in front of it.
Initial density estimates in 2018 suggested it has a density of 5.65 g/cm 3, about 1.024 times Earth's density of 5.51 g/cm 3. TRAPPIST-1e appeared to be unusual in its system, as it was the only planet with a density consistent with a pure rock-iron composition, and the only one with a higher density than Earth ( TRAPPIST-1c also appeared to ...
The orbit of TRAPPIST-1g has an eccentricity of 0.00208, [3] much lower than that of Earth and the lowest in its system. Its orbit varies by only about 41,000 kilometers (compared to about 5 million km for Earth), meaning the planet's climate is likely very stable. It is in a 3:2 orbital resonance with TRAPPIST-1h and a 3:4 resonance with ...
TRAPPIST-1c orbits the ultracool red-dwarf star TRAPPIST-1. It is 0.121 R ☉ and 0.089 M ☉, with a temperature of 2511 K and an age between 3 and 8 billion years. For comparison, the Sun has a temperature of 5778 K and is about 4.5 billion years old. TRAPPIST-1 is also very dim, with about 0.0005 times (0.05%) the luminosity of the Sun.
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 (12.5 parsecs) 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.
It was initially estimated to have a much lower mass, and thus a low density of 3.3 ± 0.9 g/cm 3 and a surface gravity around 6.1 m/s 2 (62% of Earth's value). [1] This suggested a large amount of volatiles , with a 2017 study suggesting that a water ocean may comprise as much as 20% of the planet's mass, increasing the temperature at the ...