Planet Kepler-138 b

Name Kepler-138 b
Planet Status Confirmed
Discovered in 2014
Mass 0.00021 ( -0.00012 +0.00019 ) MJ
Mass*sin(i)
Semi-Major Axis 0.0746 AU
Orbital Period 10.3126 ( -0.0006 +0.0004 ) day
Eccentricity 0.0
ω
Tperi
Radius 0.047 ( -0.003 +0.003 ) RJ
Inclination 89.95 deg
Update 2021-02-05
Detection Method Primary Transit
Mass Detection Method TTV
Radius Detection Method Primary Transit
Primary transit 2454966.51557 (± 0.00208) JD
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names KOI-314.03, K000314.03, KOI-314b, 2MASS J19213157+4317347 b, K00314.03, KIC 7603200 b, WISE J192131.55+431734.9 b

Star

Kepler-138
Name Kepler-138
Distance 66.99 ( -0.11 +0.11 ) pc
Spectral type M1 V
Apparent magnitude V
Mass 0.52 ( -0.06 +0.06 ) MSun
Age
Effective temperature 3841.0 ( -49.0 +49.0 ) K
Radius 0.44 ( -0.02 +0.02 ) RSun
Metallicity [Fe/H] -0.28 ( -0.099 +0.099 )
Detected Disc
Magnetic Field
RA2000 19:21:31.6
Dec2000 +43:17:35
Alternate Names KOI-314, 2MASS J19213157+4317347, KIC 7603200, WISE J192131.55+431734.9
Planetary system
3 planets

More data

Observability Predictor

Remarks

The planets of the Kepler-138 system have received different KOI names when they were confirmed: As Kepler candidates, the names are K000314.01 (or KOI-314.01), K000134.02 (or KOI-314.02) and K000314.03 (or KOI-314.03). Kipping et al. (2014) and Rowe et al. (2014) simultaneously gave different names to the two exterior planets: Kipping et al. confirm and name KOI-314.01 as KOI-314 b et KOI-314.02 as KOI-314 c and do not confirm the reality of KOI-134.03. Rowe et al. confirm statistically the 3 planets and name KOI-134.03 as KOI-134b, KOI-134.01 as KOI-134c and KOI-134.02 as KOI-134d. The Kepler team names K000314.01 as Kepler-138 c, K000314.02 as Kepler-138 d and K000314.03 as Kepler-138 b

Related publications

Analyzing Eight Years of Transiting Exoplanet Observations Using WFC3's Spatial Scan Monitor
2019 STEVENSON K. & FOWLER J.
Instrument Science Report WFC3 2019-12

Absolute densities in exoplanetary systems: photodynamical modelling of Kepler-138
2018 ALMENARA J., DIAZ R., DORN C., BONFILS X. & UDRY S.
MNRAS, accepted
arxiv   article  

The Gold Standard: Accurate Stellar and Planetary Parameters for Eight Kepler M dwarf Systems Enabled by Parallaxes
2017 MANN A., DUPUY T., MUIRHEAD Ph., JOHNSON M., LIU M. et al.
Astron. J., 153, 267
paper  arxiv  

Chemical Abundances of M-dwarfs from the APOGEE Survey. I. The Exoplanet Hosting Stars Kepler-138 and Kepler-186
2016 SOUTO D., CUNHA K., GARCIA-HERNANDEZ D., ZAMORA O., ALLIENDE PRIETO C. et al.
ApJ, 835, 238
paper  arxiv  ADS

The mass of the Mars-sized exoplanet Kepler-138 b from transit timing
2015 JONTOF-HUTTER D., ROWE J., LISSAUER D., FABRYCKY D. & FORD E.
Nature, 522, 321
paper  arxiv  ADS  

Validation of Kepler's Multiple Planet Candidates. III: Light Curve Analysis & Announcement of Hundreds of New Multi-planet Systems
2014 ROWE J., BRYSON T., MARCY G., LISSAUER J., JONTOF-HUTTER D. et al.
ApJ, 784, 45
paper  arxiv