Planet Kepler-444 d

Name Kepler-444 d
Planet Status Confirmed
Discovered in 2015
Mass
Mass*sin(i)
Semi-Major Axis 0.06 (± 0.0011) AU
Orbital Period 6.189392 (± 1.2e-05) day
Eccentricity 0.18 ( -0.18 +0.16 ) +
ω
Tperi
Radius 0.047 ( -0.002 +0.002 ) RJ
Inclination 88.16 ( -0.81 +0.55 ) deg
Update 2021-02-05
Detection Method Primary Transit
Mass Detection Method
Radius Detection Method Primary Transit
Primary transit 2454967.7869 (± 0.0015) JD
Secondary transit
λ
Impact Parameter b 0.53 ( -0.23 +0.13 )
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names Kepler-444 d, 2MASS J19190052+4138043 d, BD+41 3306 d, HIP 94931 d, K03158.03, KIC 6278762 d, KOI-3158 d, KOI-3158.03, Kepler-444 A d, LHS 3450 d, TYC 3129-00329-1 d, WISE J191900.62+413757.9 d

Star

Kepler-444
Name Kepler-444
Distance 36.48 ( -0.04 +0.04 ) pc
Spectral type K
Apparent magnitude V 9.0
Mass 0.76 ( -0.04 +0.04 ) MSun
Age 11.23 (± 0.99) Gyr
Effective temperature 5046.0 (± 74.0) K
Radius 0.75 ( -0.01 +0.01 ) RSun
Metallicity [Fe/H] -0.55 (± 0.07)
Detected Disc
Magnetic Field
RA2000 19:19:00.5
Dec2000 +41:38:05
Alternate Names Kepler-444, 2MASS J19190052+4138043, BD+41 3306, HIP 94931, KIC 6278762, KOI-3158, Kepler-444 A, LHS 3450, TYC 3129-00329-1, WISE J191900.62+413757.9
Planetary system
5 planets

More data


Related publications

Global dynamics and architecture of the Kepler-444 system
2022 STALPORT M., MATTHEWS E., BOURRIER V., LELEU A., DELISLE B. & UDRY S.
Astron. & Astrophys., in press
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

Revisiting Kepler-444. II. rotational, orbital and high-energy fluxes evolution of the system
2021 PEZZOTTI C., BULDGEN G., EGGENBERGER P., MEYNET G., BOURRIER V. & MORDASINI Ch.
Astron. & Astrophys., 650, 108
paper   arxiv  

Asteroseismic Investigation of 20 Planet and Planet-Candidate Host Stars
2019 KAYHAN C., YILDIZ M. & ORHAN Z.
MNRAS, 490, 1498
paper  arxiv  

PEPSI deep spectra. III. A chemical analysis of the ancient planet-host star Kepler-444
2018 MACK III C., STRASSMEIER K., ILYN I., SCHULER S., SPADA F. & BARNES S.
Astron. & Astrophys., in press
paper  arxiv  

Mass, Density, and Formation Constraints in the Compact, Sub-Earth Kepler-444 System including Two Mars-Mass Planets
2017 MILLS S. & FABRYCKY D.
ApJ. Letters, accepted
arxiv  

Eclipse, transit and occultation geometry of planetary systems at exo-syzygy
2017 VERAS D. & BREEDT E.
MNRAS, 468, 2672
paper  arxiv  ADS

Strong HI Lyman-α variations from a 11 Gyr-old host star: a planetary origin ?
2017 BOURRIER V., EHRENREICH D., ALLART R., WYTTENBACH A., SEMAAN T. et al.
Astron. & Astrophys., accepted
arxiv  

Consequences of tidal interaction between disks and orbiting protoplanets for the evolution of multi-planet systems with architecture resembling that of Kepler 444
2016 PAPALOIZOU J.
Cel. Mech. & Dyn. Astron., accepted
arxiv  

On the formation of compact planetary systems via concurrent core accretion and migration
2016 COLEMAN G. & NELSON R.
MNRAS, 457, 2480
paper  arxiv  ADS

Spin-orbit alignment of exoplanet systems: ensemble analysis using asteroseismology
2016 CAMPANTE T., LUND M., KUSZLEWICZ J., DAVIES G., CHAPLIN W. et al;
ApJ, 819, 85
paper  arxiv  ADS  

Living with a Red Dwarf: Rotation and X-ray and Ultraviolet Properties of the Halo Population Kapteyn's Star
2016 GUINAN E., ENGLE S. & DURBIN A.
ApJ, accepted
arxiv  

Dawes Review. The tidal downsizing hypothesis of planet formation
2016 NAYAKSHIN S.
Publ. Astron. Soc. Australia, accepted
arxiv  

An ancient extrasolar system with five sub-Earth-size planets
2015 CAMPANTE T., BARCLAY T., SWIFT J., UBER D., ADIBEKYAN V. et al.
ApJ, 799, 170
paper   arxiv   ADS  

Eccentricity from transit photometry: small planets in Kepler multi-planet systems have low eccentricities
2015 VAN EYLEN V. & ALBRECHT S.
ApJ, 808, 126
paper   arxiv   ADS  

Orbital Architectures of Planet-Hosting Binaries: I. Forming Five Small Planets in the Truncated Disk of Kepler-444A
2015 DUPUY T., KRATTER K., KRAUS A., ISAACSON H., MANN A. et al.
ApJ, accepted
arxiv  

KOI-3158: The oldest known system of terrestrial-size planets
2015 CAMPANTE T., BARCLAY T., SWIFT J., HUBER D., ADIBEKYAN V. et al.
in "The Space Photometry Revolution - CoRoT Symposium 3, Kepler KASC-7 Joint Meeting", 101, id.02004
paper   arxiv   ADS