Planet Kepler-138 d

Name	Kepler-138 d
Planet Status	Confirmed
Discovered in	2014
Mass	0.00201 ( _-0.00122 ^+0.00212 ) M_J
Mass*sin(i)	0.00318 ( _-0.00107 ^+0.00132 ) M_J
Semi-Major Axis	—
Orbital Period	23.0881 ( _-0.0008 ^+0.0009 ) day
Eccentricity	0.024 ( _-0.016 ^+0.03 )
ω	170.0 ( _-120.0 ^+130.0 ) deg
T_peri	—
Radius	0.108 ( _-0.007 ^+0.007 ) R_J
Inclination	—
Update	2021-02-05
Detection Method	Primary Transit
Mass Detection Method	TTV
Radius Detection Method	—
Primary transit	—
Secondary transit	—
λ	—
Impact Parameter b	—
Time V_r=0	—
Velocity Semiamplitude K	—
Calculated temperature	431.0 K
Measured temperature	—
Hottest point longitude	—
Geometric albedo	—
Surface gravity log(g/g_H)	—
Alternate Names	KOI-314.02, K000314.02, KOI-314 c, KOI-314d, 2MASS J19213157+4317347 d, K00314.02, KIC 7603200 d, KOI-314 d, WISE J192131.55+431734.9 d

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 ) M_Sun
Age	—
Effective temperature	3841.0 ( _-49.0 ^+49.0 ) K
Radius	0.44 ( _-0.02 ^+0.02 ) R_Sun
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	4 planets

More data

Simbad
Most recent references (ADS)

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

Evidence for the volatile-rich composition of a 1.5-Earth-radius planet
2023 PIAULET C., BENNEKE B., ALMENARA J., DRAGOMIR D., KNUTSON H. et al.
Nature Astronomy, 7, 206
paper arxiv

Caught in the Act: Core-powered Mass-loss Predictions for Observing Atmospheric Escape
2021 GUPTA A. & SCHLICHTING H.
MNRAS, 504, 4634
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A Deep Polarimetric Study of the Asymmetrical Debris Disk HD 106906
2021 CROTTS K., MATTHEWS B., ESPOSITO Th., DUCHENE G., KALAS P. et al.
ApJ, 915, 58
paper

How Close are Compact Multi-Planet Systems to the Stability Limit?
2021 YEE S., TAMAYO D., HADDEN S. & WINN J.
Astron. J., 162, 55
paper arxiv

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

Comparative Habitability of Transiting Exoplanets
2015 BARNES R., MEADOWS V. & EVANS N.
ApJ, 814, 91
paper arxiv ADS

The Hunt for Exomoons with Kepler (HEK): IV. A Search for Moons around Eight M-Dwarfs
2014 KIPPING D., NESVORNY D., BUCHHAVE L., HARTMAN J., BAKOS G. & SCHMITT A.
ApJ, 784, 28
paper arxiv

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