Trappist-1

Aaron Bowman

@mr_bowman

TRAPPIST-1 is an ultra-cool red dwarf star that is slightly larger but much more massive than the planet Jupiter, located 39.5 light-years from the Sun in the constellation Aquarius.

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Aaron Bowman

@mr_bowman

TRAPPIST-1 is an ultra-cool red dwarf star that is slightly larger but much more massive than the planet Jupiter, located 39.5 light-years from the Sun in the constellation Aquarius.

TRAPPIST-1
Official webpage for the TRAPPIST-1 system
http://www.trappist.one
TRAPPIST-1 is Older Than Our Solar System | NASA
If we want to know more about whether life could survive on a planet outside our solar system, it’s important to know the age of its star.
https://www.nasa.gov/feature/jpl/trappist-1-is-older-than-our-solar-system
It's unlikely that the TRAPPIST-1 planets support life
Earlier this year, NASA made headlines when they reported the discovery of seven Earth-sized planets just 40 light years away. Three of the TRAPPIST-1 planets...
https://www.engadget.com/2017/07/13/unlikely-that-trappist-1-planets-support-life/
Trappist-1 Could Be Twice As Old As Solar System, Changing the Odds of Finding Life
The planetary system, located 40 light years away from Earth, is considered a candidate for finding life outside our solar system.
http://www.newsweek.com/trappist-1-solar-system-alien-life-650538
Hubble delivers first hints of possible water content of TRAPPIST-1 planets | ESA/Hubble
An international team of astronomers used the NASA/ESA Hubble Space Telescope to estimate whether there might be water on the seven earth-sized planets orbiting the nearby dwarf star TRAPPIST-1. The results suggest that the outer planets of the system might still harbour substantial amounts of water. This includes the three planets within the habitable zone of the star, lending further weight to the possibility that they may indeed be habitable.
https://www.spacetelescope.org/news/heic1713/
First hints of water on TRAPPIST-1 planets | Space | EarthSky
A new Hubble study suggests possible substantial water on the outer Earth-sized planets orbiting nearby dwarf star TRAPPIST-1.
http://earthsky.org/space/first-hints-of-water-on-trappist-1-planets
TRAPPIST-1 Planets May Still Be Wet Enough for Life, Despite Losing Many Oceans
The Earth-sized planets in the TRAPPIST-1 system could still harbor large amounts of water, despite large losses from UV radiation, a new study shows.
https://www.space.com/38011-trappist-1-planets-enough-water-life.html
TRAPPIST-1 Planets May Be Twice As Old As Earth
Life has had a long time to get a foothold on the rocky planets circling the tiny, dim star TRAPPIST-1, a new study suggests.
https://www.space.com/37828-trappist-1-exoplanets-older-than-solar-system.html
Bad News for Life: TRAPPIST-1 Planets' Atmospheres May Have Been Destroyed
The potentially Earth-like planets in the TRAPPIST-1 system may not be so conducive to life after all, two new studies report.
https://www.space.com/37530-trappist-1-planets-atmospheres-stripped.html
NASA & TRAPPIST-1: A Treasure Trove of Planets Found - YouTube
Seven Earth-sized planets have been observed by NASA's Spitzer Space Telescope around a tiny, nearby, ultra-cool dwarf star called TRAPPIST-1.
https://www.youtube.com/watch?v=bnKFaAS30X8
TRAPPIST-1
Wikipedia
https://en.wikipedia.org/wiki/TRAPPIST-1

TRAPPIST-1
Observation data Epoch J2000 Equinox J2000
TRAPPIST-1 is within the red circle in the constellation Aquarius.
Constellation	Aquarius
Right ascension	23^h 06^m 29.368^s^[1]
Declination	−05° 02′ 29.04″^[1]
Apparent magnitude (V)	18.798±0.082^[2]
Characteristics
Evolutionary stage	Main sequence
Spectral type	M8V^[3]
Apparent magnitude (R)	16.466±0.065^[2]
Apparent magnitude (I)	14.024±0.115^[2]
Apparent magnitude (J)	11.354±0.022^[4]
Apparent magnitude (H)	10.718±0.021^[4]
Apparent magnitude (K)	10.296±0.023^[4]
V−R color index	2.332
R−I color index	2.442
J−H color index	0.636
J−K color index	1.058
Astrometry

Proper motion (μ)	RA: 930.788^[1] mas/yr Dec.: −479.038^[1] mas/yr
Parallax (π)	80.2123 ± 0.0716 mas^[1]
Distance	40.66 ± 0.04 ly (12.47 ± 0.01 pc)

Details

Mass	0.0898±0.0023^[5] `M`_☉
Radius	0.1192±0.0013^[5] `R`_☉
Luminosity (bolometric)	0.000553±0.000018^[5] `L`_☉
Surface gravity (log g)	5.2396+0.0056 −0.0073^[a]^[5] cgs
Temperature	2,566±26^[5] K
Metallicity [Fe/H]	0.04±0.08^[6] dex
Rotation	3.295±0.003 days^[7]
Rotational velocity (v sin i)	6^[8] km/s
Age	7.6±2.2^[9] Gyr

Other designations
2MUDC 12171, ^[10] 2MASS J23062928–0502285, EPIC 246199087, ^[11] K2-112, ^[12] SPECULOOS-1, ^[b] ^[13] TRAPPIST-1a ^[14]
Database references
SIMBAD	data
Exoplanet Archive	data

Source : Wikipedia under CC-BY-SA license

Links
Media

TRAPPIST-1
Official webpage for the TRAPPIST-1 system
http://www.trappist.one
TRAPPIST-1 is Older Than Our Solar System | NASA
If we want to know more about whether life could survive on a planet outside our solar system, it’s important to know the age of its star.
https://www.nasa.gov/feature/jpl/trappist-1-is-older-than-our-solar-system
It's unlikely that the TRAPPIST-1 planets support life
Earlier this year, NASA made headlines when they reported the discovery of seven Earth-sized planets just 40 light years away. Three of the TRAPPIST-1 planets...
https://www.engadget.com/2017/07/13/unlikely-that-trappist-1-planets-support-life/
Trappist-1 Could Be Twice As Old As Solar System, Changing the Odds of Finding Life
The planetary system, located 40 light years away from Earth, is considered a candidate for finding life outside our solar system.
http://www.newsweek.com/trappist-1-solar-system-alien-life-650538
Hubble delivers first hints of possible water content of TRAPPIST-1 planets | ESA/Hubble
An international team of astronomers used the NASA/ESA Hubble Space Telescope to estimate whether there might be water on the seven earth-sized planets orbiting the nearby dwarf star TRAPPIST-1. The results suggest that the outer planets of the system might still harbour substantial amounts of water. This includes the three planets within the habitable zone of the star, lending further weight to the possibility that they may indeed be habitable.
https://www.spacetelescope.org/news/heic1713/
First hints of water on TRAPPIST-1 planets | Space | EarthSky
A new Hubble study suggests possible substantial water on the outer Earth-sized planets orbiting nearby dwarf star TRAPPIST-1.
http://earthsky.org/space/first-hints-of-water-on-trappist-1-planets
TRAPPIST-1 Planets May Still Be Wet Enough for Life, Despite Losing Many Oceans
The Earth-sized planets in the TRAPPIST-1 system could still harbor large amounts of water, despite large losses from UV radiation, a new study shows.
https://www.space.com/38011-trappist-1-planets-enough-water-life.html
TRAPPIST-1 Planets May Be Twice As Old As Earth
Life has had a long time to get a foothold on the rocky planets circling the tiny, dim star TRAPPIST-1, a new study suggests.
https://www.space.com/37828-trappist-1-exoplanets-older-than-solar-system.html
Bad News for Life: TRAPPIST-1 Planets' Atmospheres May Have Been Destroyed
The potentially Earth-like planets in the TRAPPIST-1 system may not be so conducive to life after all, two new studies report.
https://www.space.com/37530-trappist-1-planets-atmospheres-stripped.html
NASA & TRAPPIST-1: A Treasure Trove of Planets Found - YouTube
Seven Earth-sized planets have been observed by NASA's Spitzer Space Telescope around a tiny, nearby, ultra-cool dwarf star called TRAPPIST-1.
https://www.youtube.com/watch?v=bnKFaAS30X8
TRAPPIST-1
Wikipedia
https://en.wikipedia.org/wiki/TRAPPIST-1

TRAPPIST-1
Observation data Epoch J2000 Equinox J2000
TRAPPIST-1 is within the red circle in the constellation Aquarius.
Constellation	Aquarius
Right ascension	23^h 06^m 29.368^s^[1]
Declination	−05° 02′ 29.04″^[1]
Apparent magnitude (V)	18.798±0.082^[2]
Characteristics
Evolutionary stage	Main sequence
Spectral type	M8V^[3]
Apparent magnitude (R)	16.466±0.065^[2]
Apparent magnitude (I)	14.024±0.115^[2]
Apparent magnitude (J)	11.354±0.022^[4]
Apparent magnitude (H)	10.718±0.021^[4]
Apparent magnitude (K)	10.296±0.023^[4]
V−R color index	2.332
R−I color index	2.442
J−H color index	0.636
J−K color index	1.058
Astrometry

Proper motion (μ)	RA: 930.788^[1] mas/yr Dec.: −479.038^[1] mas/yr
Parallax (π)	80.2123 ± 0.0716 mas^[1]
Distance	40.66 ± 0.04 ly (12.47 ± 0.01 pc)

Details

Mass	0.0898±0.0023^[5] `M`_☉
Radius	0.1192±0.0013^[5] `R`_☉
Luminosity (bolometric)	0.000553±0.000018^[5] `L`_☉
Surface gravity (log g)	5.2396+0.0056 −0.0073^[a]^[5] cgs
Temperature	2,566±26^[5] K
Metallicity [Fe/H]	0.04±0.08^[6] dex
Rotation	3.295±0.003 days^[7]
Rotational velocity (v sin i)	6^[8] km/s
Age	7.6±2.2^[9] Gyr

Other designations
2MUDC 12171, ^[10] 2MASS J23062928–0502285, EPIC 246199087, ^[11] K2-112, ^[12] SPECULOOS-1, ^[b] ^[13] TRAPPIST-1a ^[14]
Database references
SIMBAD	data
Exoplanet Archive	data

Source : Wikipedia under CC-BY-SA license

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Trappist-1

TRAPPIST-1 is an ultra-cool red dwarf star that is slightly larger but much more massive than the planet Jupiter, located 39.5 light-years from the Sun in the constellation Aquarius.

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