Planet LHS 1140 b

Name LHS 1140 b
Planet Status Confirmed
Discovered in 2017
Mass 0.0209 ( -0.00573 +0.00573 ) MJ
Mass*sin(i)
Semi-Major Axis 0.0875 (± 0.0041) AU
Orbital Period 24.73712 (± 0.00025) day
Eccentricity 0.29 ( -0.29 +0.0 )
ω
Tperi
Radius 0.128 ( -0.0089 +0.0089 ) RJ
Inclination 89.912 (± 0.07) deg
Update 2017-05-02
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Primary transit 2456915.6997 (± 0.0054) JD
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 5.34 (± 1.1) m/s
Calculated temperature 230.0 K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

LHS 1140
Name LHS 1140
Distance 12.47 (± 0.42) pc
Spectral type M4.5
Apparent magnitude V 14.15
Mass 0.146 (± 0.019) MSun
Age 5.0 ( -0.0 +8.0 ) Gyr
Effective temperature 3131.0 (± 100.0) K
Radius 0.186 (± 0.013) RSun
Metallicity [Fe/H] -0.24 (± 0.1)
Detected Disc
Magnetic Field
RA2000 00:44:59.0
Dec2000 -15:16:17
Alternate Names
Planetary system
2 planets

More data


Related publications

A second planet with an Earth-like composition orbiting the nearby M dwarf LHS 1140
2019 MENT, K., DITTMANN, J., ASTUDILLO-DEFRU, N., CHARBONNEAU, D., IRWIN, J. et al.
Astron. J., 157, 32
paper  arxiv  ADS  

Diverse outcomes of planet formation and composition around low-mass stars and brown dwarfs
2019 MIGUEL Y., CRIDLAND A., ORMEL C., FORTNEY J. & IDA S.
MNRAS, submitted
arxiv  

Transition from eyeball to snowball driven by sea-ice drift on tidally locked terrestrial planets
2019 YANG J., JI W. & ZENG Y.
Nature Astronomy, in press
paper  

Simultaneous Optical Transmission Spectroscopy of a Terrestrial, Habitable-Zone Exoplanet with Two Ground-Based Multi-Object Spectrographs
2019 DIAMOND-LOWE H., BERTA-THOMPSON Z., CHARBONNEAU D., DITTMANN J. & KEMPTON E.
Astron. J., submitted
arxiv  

Detectability of atmospheric features of Earth-like planets in the habitable zone around M dwarfs
2019 WUNDERLICH F., GODOLT M., GRENFELL J., STÄDT S., SMITH A. et al.
Astron. & Astrophys., 624, A49
paper  arxiv

What factors affect the duration and outgassing of the terrestrial magma ocean?
2019 NIKOLAOU A., KAYTAL N., TOSI N., GODOLT M., GRENFELL J. & RAUER H.
ApJ, submitted
arxiv  

A search for technosignatures from TRAPPIST-1, LHS 1140, and 10 planetary systems in the Kepler field with the Green Bank Telescope at 1.15-1.73 GHz
2019 PINCHUK P., MARGOT J.-L., GREENBERG A., AYALDE Th., BLOXHAM Ch. et al.
Astron. J., 157, 122
paper  arxiv  

Habitability of exoplanet waterworlds
2018 KITE E. & FORD E.
ApJ, 864, 75
arxiv   paper  

The Impact of Stellar Distances on Habitable Zone Planets
2018 S. KANE
ApJL, 861, L21
arxiv    ADS  

Minimizing the bias in exoplanet detection - application to radial velocities of LHS 1140
2018 FENG, F., TUOMI, M. & H. JONES
MNRAS, submitted
arxiv  paper   ADS  

Hydrohalite Salt-albedo Feedback Could Cool M-dwarf Planets
2018 SHIELDS, A. & R. CARNS
ApJ, 867, 11
paper   arxiv   ADS  

A temperate rocky super-Earth transiting a nearby cool star
2017 DITTMANN J., IRWIN J., CHARBONNEAU D., BONFILS X., ASTUDILLO-DEFRU N., et al.
Nature, 544, 333
paper  arxiv  ADS