Planet TRAPPIST-1 h

Name TRAPPIST-1 h
Planet Status Confirmed
Discovered in 2017
Mass
Mass*sin(i)
Semi-Major Axis 0.063 ( -0.013 +0.027 ) AU
Orbital Period 20.0 ( -6.0 +15.0 ) JD
Eccentricity
ω
Tperi
Radius 0.0674 (± 0.003) RJ
Inclination 89.8 ( -0.05 +0.1 ) deg
Update 2017-02-22
Detection Method Primary Transit
Mass Detection Method
Radius Detection Method Primary Transit
Molecules
Primary transit 2457662.55463 (± 0.00056) JD
Secondary transit
λ
Impact Parameter b 0.45 ( -0.29 +0.22 )
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 168.0 ( -28.0 +21.0 ) 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

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, accepted
arxiv  

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, submitted
arxiv  

Formation of TRAPPIST-1 and other compact systems
2017 ORMEL Ch., LIU B. & SCHOONENBERG D.
Astron. & Astrophys., submitted
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