Planet TRAPPIST-1 b

Name TRAPPIST-1 b
Planet Status Confirmed
Discovered in 2016
Mass 0.0027 (± 0.0023) MJ
Mass*sin(i)
Semi-Major Axis 0.01111 (± 0.00034) AU
Orbital Period 1.51087081 (± 6e-05) JD
Eccentricity 0.0 ( -0.0 +0.081 )
ω
Tperi
Radius 0.09689 (± 0.00031) RJ
Inclination 89.65 (± 0.27) deg
Update 2017-02-22
Detection Method Primary Transit
Mass Detection Method TTV
Radius Detection Method Primary Transit
Molecules
Primary transit 2457322.51736 (± 0.0001) JD
Secondary transit
λ
Impact Parameter b 0.126 ( -0.078 +0.092 )
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 400.1 (± 7.7) 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

More data


Related publications

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, submitted
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  

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

Water loss from Earth-sized planets in the habitable zones of ultracool dwarfs: Implications for the planets of TRAPPIST-1
2017 BOLMONT E., SELSIS F., OWEN J., RIBAS I., RAYMOND S. et al.
MNRAS, 464, 3728
paper  arxiv  ADS

Strong XUV irradiation of the Earth-sized exoplanets orbiting the ultracool dwarf TRAPPIST-1
2017 WHEATLEY P., LOUDEN T., BOURRIER V., EHRENREICH D. & GILLON M.
MNRAS, 465, L69
paper  arxiv  ADS

First limits on the occurrence rate of short-period planets orbiting brown dwarfs
2017 HE M., TRIAUD A. & GILLON M.
MNRAS, 464, 2687
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., submitted
arxiv  

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

Speckle Imaging Excludes Low-Mass Companions Orbiting the Exoplanet Host Star TRAPPIST-1
2016 HOWELL S., EVERETT M., HORCH E., WINTERS J., HIRSCH L. et al.
ApJ. Letters, 929, L2
paper  

Habitable worlds with JWST: transit spectroscopy of the TRAPPIST-1 system?
2016 BARSTOW J. & IRWIN J.
MNRAS, 461, L92
paper  arxiv  ADS  

A combined transmission spectrum of the Earth-sized exoplanets TRAPPIST-1 b and c
2016 de WIT J., WAKEFORD H., GILLON M., LEWIS N., VALENTI J. et al.
arxiv  

Prospects for detecting the Rossiter-McLaughlin effect of Earth-like planets: the test case of TRAPPIST-1b and c
2016 CLOUTIER, R. & A. TRIAUD
MNRAS, 462, 4018
arxiv  paper   ADS  

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  

Speckle Imaging Excludes Low-Mass Companions Orbiting the Exoplanet Host Star TRAPPIST-1
2016 HOWELL,S., EVERETT, M., HORCH, E. & 4 additional authors
ApJL, 829, L2
arxiv  paper   ADS