TRAPPIST-1 Planet Lineup · NASA · NASA — public domain
TRAPPIST-1 g
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TRAPPIST-1g is an exoplanet orbiting around the ultra-cool dwarf star TRAPPIST-1, located 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. The exoplanet is within the optimistic habitable zone of its host star. It 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.
Astronomical data · SIMBAD
- Object type
- Pl
- Distance
- 41 light-years
- Coordinates
- RA 346.6224° · Dec -5.0414°
via SIMBAD · CDS Strasbourg
Key facts
- Planet.name
- TRAPPIST-1g
- Planet.image
- TRAPPIST-1g artist impression 2018.png
- Planet.caption
- Artist's impression of TRAPPIST-1g. (February 2018)
- Planet.discoverer
- Michaël Gillon et al.
- Planet.discovery_site
- Spitzer Space Telescope
- Planet.discovered
- 22 February 2017
- Planet.discovery_method
- Transit
- Planet.apsis
- astron
- Planet.star
- TRAPPIST-1
- Planet.surface_grav
- g
- Planet.single_temperature
- Teq: ()
via Wikipedia infobox
Exoplanet data
- Host star
- TRAPPIST-1
- Discovered
- 2017
- Discovered by
- Multiple Observatories
- Orbital period
- 12.35 days
- Radius
- 1.13 × Earth
- Mass
- 1.32 × Earth
- Equilibrium temp
- 197.30 K
- Distance
- 12.43 pc
via NASA Exoplanet Archive
Wikidata facts
- Constellation
- Aquarius
- Parent body
- TRAPPIST-1
- Radius
- 0.1005
- Mass
- 0.00422
- Orbital period
- 12.35294
- Image
- TRAPPIST-1g artist impression 2018.png
Show 14 more facts
- time of discovery or invention
- 2016-05-00
- discovery method
- transit method
- semi-major axis of an orbit
- 0.0451
- orbital eccentricity
- 0.061
- orbital inclination
- 89.71
- right ascension
- 346.62236835536920
- declination
- -5.04139769179028
- epoch
- J2000.0
- right ascension component of proper motion
- 930.879
- declination component of proper motion
- -479.403
- parallax
- 80.4512
- argument of periapsis
- 191.34
- Commons category
- TRAPPIST-1 g
- catalog code
- TIC 278892590g
via Wikidata · CC0
~4 min read
Encyclopedic overview
7 sectionsContents
- Physical characteristics
- Mass, radius, and temperature
- Atmosphere
- Host star
- Orbit
- See also
- References
TRAPPIST-1g is an exoplanet orbiting around the ultra-cool dwarf star TRAPPIST-1, located 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. The exoplanet is within the optimistic habitable zone of its host star. It 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.
The second-most-distant-known planet in its system, TRAPPIST-1g is a planet somewhat larger than Earth and with a similar density, meaning it is likely a rocky planet.
Excerpted from Wikipedia’s “TRAPPIST-1 g” article, available under the CC BY-SA 4.0 licence.