Planet K2-31 Ab

Detailed information about planet K2-31 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

K2-31 Ab

Planet Status

Confirmed

Discovered in

2016

Update

2024-08-01

Mass

1.774 (\begin{matrix} + 0.079 \\ - 0.079 \end{matrix})

M_J 1 publication

K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star

Mass*sin(i)

—

Semi-Major Axis

0.022 (\pm 0.0018)

Orbital Period

1.25785 (\pm 2e-06)

day 1 publication

K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star

Eccentricity

— 1 publication

K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star

ω

—

T_peri

—

Radius

1.06 (\begin{matrix} + 0.35 \\ - 0.35 \end{matrix})

R_J 1 publication

K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star

Inclination

79.9 (\pm 0.8)

deg 1 publication

K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star

Detection Method

Primary Transit

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Primary Transit

Primary transit

2457191.70889 (\pm 0.00024)

JD 1 publication

K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star

Secondary transit

—

λ

—

Impact Parameter b

0.975 (\begin{matrix} + 0.075 \\ - 0.075 \end{matrix})

1 publication

K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star

Time V_r=0

—

Velocity Semiamplitude K

350.9 (\begin{matrix} + 1.0 \\ - 1.0 \end{matrix})

m/s 1 publication

K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

K2-31 b, EPIC 204129699.01, WISE J162145.75-233253.2 b, EPIC 204129699 b, TYC 6794-00471-1 b, 2MASS J16214578-2332520 b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

No remarks

No link

Star

Name

K2-31 A

Distance

110.527 (\begin{matrix} + 0.72 \\ - 0.712 \end{matrix})

pc 1 publication

The Revised TESS Input Catalog and Candidate Target List

Spectral type

G7V

Apparent magnitude V

10.8

Mass

0.922 (\begin{matrix} + 0.1444 \\ - 0.0829 \end{matrix})

M_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Age

—

Effective temperature

5340.0 (\begin{matrix} + 83.547 \\ - 111.149 \end{matrix})

K 1 publication

The Revised TESS Input Catalog and Candidate Target List

Radius

1.029 (\begin{matrix} + 0.0577 \\ - 0.0557 \end{matrix})

R_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

0.15 (\pm 0.1)

1 publication

The Revised TESS Input Catalog and Candidate Target List

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

16:21:45.8

Dec₂₀₀₀

-23:32:52.3

Alternate Names

EPIC 204129699, TYC 6794-471-1, 2MASS 16214578-2332520

K2-31 forms a widely separated (a = 931 AUs) binary sustem with a low-mass (0.109 M_Sol) late M dwarf companion star (Mugrauer 2019).

No link

Simbad
Most recent references (ADS)

Planet K2-31 Ab

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 13 parameters

Planetary system 1 planet

Remarks Some remarks

Other web pages No page

More data 2 references

Planet K2-31 Ab

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 13 parameters

Planetary system 1 planet

Remarks Some remarks

Other web pages No page

More data 2 references

Related publications

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Search for stellar companions of exoplanet host stars by exploring the second ESA-Gaia data release

The Revised TESS Input Catalog and Candidate Target List

Discovery of Six Optical Phase Curves with K2

High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016

K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star