Planet TRAPPIST-1 g

Name TRAPPIST-1 g
Planet Status Confirmed
Discovered in 2017
Mass 0.00422 (± 0.0028) MJ
Mass*sin(i)
Semi-Major Axis 0.0451 (± 0.0014) AU
Orbital Period 12.35294 (± 0.00012) JD
Eccentricity 0.0 ( -0.0 +0.061 )
ω
Tperi
Radius 0.1005 (± 0.0037) RJ
Inclination 89.71 (± 0.025) deg
Update 2017-09-01
Detection Method Primary Transit
Mass Detection Method TTV
Radius Detection Method Primary Transit
Molecules H2O
Primary transit 2457665.34937 (± 0.00021) JD
Secondary transit
λ
Impact Parameter b 0.421 (± 0.031)
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 198.6 (± 3.8) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

TRAPPIST-1
Name TRAPPIST-1
Distance 12.1 (± 0.4) pc
Spectral type M8
Apparent magnitude V 18.8
Mass 0.08 (± 0.009) MSun
Age 0.5 Gyr
Effective temperature 2550.0 (± 55.0) K
Radius 0.117 (± 0.004) RSun
Metallicity [Fe/H] 0.04 (± 0.08)
Detected Disc
Magnetic Field
RA2000 23:06:29.0
Dec2000 -05:02:29
Alternate Names 2MASS J23062928-0502285
Planetary system
7 planets

Related publications

Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
2017 GILLON M., TRIAUD A., DEMORY B.-O. et al.
Nature, 542, 456
paper  arxiv   ADS

Enhanced interplanetary panspermia in the TRAPPIST-1 system
2017 LINGAM M. & LOEB A.
PNAS, submitted
arxiv  

Eclipse, transit and occultation geometry of planetary systems at exo-syzygy
2017 VERAS D. & BREEDT E.
MNRAS, 468, 2672
paper  arxiv  ADS

Exponential Distance Relation and Near Resonances in the Trappist-1 Planetary System
2017 PLETSER V. & BASANO L.
arxiv  

Assessing the Habitability of the TRAPPIST-1 System Using a 3D Climate Model
2017 WOLF E.
ApJ. Letters, 839, L1
paper  arxiv  ADS

Formation of TRAPPIST-1 and other compact systems
2017 ORMEL Ch., LIU B. & SCHOONENBERG D.
Astron. & Astrophys., 604, A1
paper  arxiv   paper   ADS  

Frequent flaring in the TRAPPIST-1 system - unsuited for life?
2017 VIDA K., KOVARI Z., PAL A., OLAH K. & KRISKOVICS L.
ApJ, submitted
arxiv  

A revolution is brewing: observations of TRAPPIST-1 exoplanetary system fosters a new biomarker
2017 TURBO-KING M., TANG B., HEBEERTABLE Z., CHOUFFE M., EXQUISIT B. & KEG-BEER L.
J. of Astrobiol.
arxiv  

Fast litho-panspermia in the habitable zone of the TRAPPIST-1 system
2017 KRIJT S., BOWLING T., LYONS R., & CIESLA F.
ApJ. Letters, 839, L21
paper  arxiv  ADS

Worlds Without Moons: Exomoon Constraints for Compact Planetary Systems
2017 KANE S.
ApJ. Letters, accepted
arxiv  

Plausible Compositions of the Seven TRAPPIST-1 Planets Using Long-term Dynamical Simulations
2017 QUARLES B., QUINTANA E., LOPEZ E., SCHLIEDER J. & BARCLAY Th.
ApJ. Letters, 842, L5
paper  arxiv  

Limits on the Stability of TRAPPIST-1
2017 TAMAYO D., REIN H., PETROVICH C. & MURRAY N.
ApJ, submitted
arxiv  

Updated Masses for the TRAPPIST-1 Planets
2017 WANG S., WU D.-H., BARVLAY Th. & LAUGHLIN G.
ApJ, submitted
arxiv  

Convergent Migration Renders TRAPPIST-1 Long-lived
2017 TAMAYO D., REIN H., PETROVICH C. & MURRAY N.
ApJ. Letters, 840, L19
paper  arxiv   ADS

Atmospheric escape from the TRAPPIST-1 planets and implications for habitability
2017 DONG Ch. JIN M., LINGAM M., AIRAPETIAN V., MA Y. &van der HOLST B.
arxiv  

On the Spin States of Habitable Zone Exoplanets Around M Dwarfs: The Effect of a Near-Resonant Companion
2017 VINSON A. & HANSEN B.
MNRAS, submitted
arxiv  

On the Age of the TRAPPIST-1 System
2017 BURGASSER A. & MAMAJEK E.
ApJ, 845, 110
paper  arxiv  

Constraining the Compositions of the TRAPPIST-1 Planets to Trace Snow Lines and Migration in M Dwarf Disks
2017 UNTERBORN C., DESCH S., HINKEL N. & LORENZO A.
ApJ
arxiv  

The Threatening Environment of the TRAPPIST-1 Planets
2017 GARRAFFO C., DRAKE J., COHEN O., ALVARO-GOMEZ J. & MOSCHOU S.
ApJ Lett, 843, L33
paper  arxiv  

Comparative Climates of TRAPPIST-1 planetary system: results from a simple climate-vegetation model
2017 ALBERTI T., CARBONE V., LEPRETI F. & VECCHIO A.
ApJ, accepted
arxiv  

Reconnaissance of the TRAPPIST-1 exoplanet system in the Lyman-α line
2017 BOURRIER, V., EHRENREICH, D., WHEATLEY, P. & 7 additional authors
Astron. & Astrophys., 599, L3
arxiv  paper   ADS  

Comparative Climates of the Trappist-1 Planetary System: Results from a Simple Climate-vegetation Model
2017 TOMMASO, A., CARBONE, V., LEPRETI F. & A. VECCHIO
ApJ, 844, 19
arxiv  paper   ADS  

Reduced Diversity of Life Around Proxima Centauri and TRAPPIST-1
2017 LINGAM M. & LOEB A.
ApJ, 846, L21
paper  arxiv   ADS  

Climate diversity on cool planets around cool stars with a versatile 3-D Global Climate Model: the case of TRAPPIST-1 planets
2017 TURBET M., BOLMONT E., LECONTE J., FORGET F., SELSIS F. et al.
Astron. & Astrophys., submitted
arxiv   paper   ADS  

Astrometric Constraints on the Masses of Long-Period Gas Giant Planets in the TRAPPIST-1 Planetary System
2017 BOSS A., WEINBERGER A., KEISER S., ASTRAATMADJA T., ANGLADA-ESCUDE G. & THOMPSON I.
Astron. J., 154, 103
arxiv   paper   ADS  

Temporal evolution of the high-energy irradiation and water content of TRAPPIST-1 exoplanets
2017 BOURRIER V., de WIT J., BOLMONT E., STAMENKOVIC V., WHEATLEY P. et al.
Astron. J., 154, 121
paper  arxiv  

Anti-correlation between multiplicity and orbital properties in exoplanetary systems as a possible record of their dynamical histories
2017 ZINZI A. & TURINI D.
Astron. & Astrophys., in press
paper  arxiv  

The Science Case for an Extended Spitzer Mission
2017 YEE J., FAZIO G., BENJAMIN R., KIRKPATRICK D., MALKAN M. et al.
arxiv  

Magma oceans and enhanced volcanism on TRAPPIST-1 planets due to induction heating
2017 KISLAKOVA K., NOACK L., JOHNSTONE C., ZITSEV V., FOSSATI L. et al.
Nature Astronomy, in press
paper   arxiv  

The Stellar Activity of TRAPPIST-1 and Consequences for the Planetary Atmospheres
2017 ROETTENBACHER R. & KANE S.
ApJ, accepted
arxiv  

Refraction in exoplanet atmospheres: Photometric signatures, implications for transmission spectroscopy, and search in Kepler data
2017 ALP D. & DEMORY B.-O.
Astron. & Astrophys., accepted
arxiv  

The Transit Light Source Problem: False Spectral Features and Incorrect Densities for M Dwarf Transiting Planets
2017 RACKHAM B., APAI D. & GIAMPAPA M.
ApJ, submitted
arxiv  

Planet-Planet Occultations in TRAPPIST-1 and Other Exoplanet Systems
2017 LUGER R., LUSTIG-YAEGER J. & AGOL E.
ApJ, accepted
arxiv  

The TRAPPIST-1 system: Orbital evolution, tidal dissipation, formation and habitability
2017 PAPALOIZOU J., SZUSZKIEWICZ E. & TERQUEM C.
MNRAS, in press
paper  arxiv  

Temperate Earth-sized planets transiting a nearby ultracool dwarf star
2016 GILLON M., JEHIN E., LEDERER S., DELREZ L., de WIT J. et al.
Nature, 533, 221
paper  arxiv   ADS