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 | 4 planets |
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 bRelated 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
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
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
