Planet KELT-8 b

Detailed information about planet KELT-8 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

KELT-8 b

Planet Status

Confirmed

Discovered in

2015

Publication Status

—

Update

2025-07-04

Mass

0.874 (\begin{matrix} + 0.068 \\ - 0.067 \end{matrix})

M_J

Mass*sin(i)

0.867 (\begin{matrix} + 0.065 \\ - 0.065 \end{matrix})

M_J 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Semi-Major Axis

0.04571 (\begin{matrix} + 0.00096 \\ - 0.00084 \end{matrix})

AU 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Orbital Period

3.24406 (\pm 0.00016)

day 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Eccentricity

0.035 (\begin{matrix} + 0.05 \\ - 0.025 \end{matrix})

1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Angular distance

—

ω

85.0 (\begin{matrix} + 87.0 \\ - 97.0 \end{matrix})

deg 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

T_peri

2456870.47 (\begin{matrix} + 0.75 \\ - 0.86 \end{matrix})

JD 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Radius

1.86 (\begin{matrix} + 0.18 \\ - 0.18 \end{matrix})

R_J 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Inclination

82.65 (\begin{matrix} + 0.8 \\ - 1.0 \end{matrix})

deg 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Detection Method

Primary Transit

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Primary Transit

Primary transit

2456883.4803 (\pm 0.0007)

JD 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Secondary transit

2456868.886 (\begin{matrix} + 0.049 \\ - 0.043 \end{matrix})

JD 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

λ

—

Impact Parameter b

0.763 (\begin{matrix} + 0.097 \\ - 0.057 \end{matrix})

1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Time V_r=0

—

Velocity Semiamplitude K

104.0 (\pm 6.4)

m/s 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Calculated temperature

1675.0 K 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

—

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference
H2O
H2O	Measurements	Detected				2025 - BASILICATA M.

No remarks

No link

Star

Name

KELT-8

Distance

236.0 (\pm 9.0)

pc 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Spectral type

G2IV

Apparent magnitude V

10.83

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.211 (\begin{matrix} + 0.078 \\ - 0.066 \end{matrix})

M_Sun 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Age

5.4 (\pm 0.5)

Gyr 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Effective temperature

5754.0 (\pm 55.0)

K 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Radius

1.67 (\pm 0.14)

R_Sun 1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Metallicity [Fe/H]

0.27 (\pm 0.04)

1 publication

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

18:53:13.0

Dec₂₀₀₀

+24:07:39.0

Alternate Names

HD 343246

No remarks

No link

Simbad
Most recent references (ADS)

Planet KELT-8 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 1 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Planet KELT-8 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 1 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Related publications

The GAPS Programme at TNG LXVII. Detection of water and preliminary characterisation of the atmospheres of the two hot Jupiters KELT-8 b and KELT-23 Ab

A Blind Search for Transit Depth Variability with TESS

TESS Transit Timing of Hundreds of Hot Jupiters

Detection limits of exoplanetary atmospheres with 2-m class telescopes

Ephemeris refinement of 21 Hot Jupiter exoplanets with high timing uncertainties

KELT: The Kilodegree Extremely Little Telescope, a Survey for Exoplanets Transiting Bright, Hot Stars

The Frequency of Binary Companions Around KELT Planet Host Stars

KELT-8 b: A highly inflated transiting hot Jupiter and a new technique for extracting high-precision radial velocities from noisy spectra