Planet KELT-23 Ab

Detailed information about planet KELT-23 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

KELT-23 Ab

Planet Status

Confirmed

Discovered in

2019

Publication Status

—

Update

2025-07-04

Mass

0.937 (\pm 0.04)

M_J 2 publications

Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Mass*sin(i)

—

Semi-Major Axis

0.03523 (\pm 0.0005)

AU 2 publications

Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Orbital Period

2.25528756 (\pm 6e-08)

day 2 publications

Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Eccentricity

—

Angular distance

—

ω

—

T_peri

—

Radius

1.29 (\pm 0.02)

R_J 2 publications

Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Inclination

86.04 (\pm 0.04)

deg 2 publications

Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Detection Method

Primary Transit

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Primary Transit

Primary transit

2458683.911353 (\pm 2e-05)

JD 1 publication

Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties

Secondary transit

—

λ

—

Impact Parameter b

0.525 (\begin{matrix} + 0.004 \\ - 0.005 \end{matrix})

2 publications

Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Time V_r=0

—

Velocity Semiamplitude K

150.6 (\pm 4.4)

m/s 1 publication

KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Calculated temperature

1513.0 (\pm 13.0)

K 2 publications

Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

TOI-1165.01

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-23 A

Distance

125.42 (\pm 0.35)

pc 1 publication

KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Spectral type

G0V

Apparent magnitude V

10.4

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.942 (\begin{matrix} + 0.06 \\ - 0.054 \end{matrix})

M_Sun 2 publications

KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Age

6.4 (\begin{matrix} + 3.5 \\ - 3.2 \end{matrix})

Gyr 2 publications

KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Effective temperature

5899.0 (\pm 49.0)

K 2 publications

KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Radius

0.996 (\pm 0.015)

R_Sun 2 publications

KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Metallicity [Fe/H]

-0.105 (\pm 0.078)

2 publications

KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones
KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

15:28:35.0

Dec₂₀₀₀

+66:21:32.0

Alternate Names

BD+66 911, TOI-1165

Michel & Mugrauer (2021): an M dwarf companion lies 577 AUs away.

No link

Simbad
Most recent references (ADS)

Planet KELT-23 Ab

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 Some remarks

Other web pages No page

More data 2 references

Planet KELT-23 Ab

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 Some remarks

Other web pages No page

More data 2 references

Related publications

Automatic search for transiting planets in TESS-SPOC FFIs with RAVEN: over 100 newly validated planets and over 2000 vetted candidates

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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

Ground-based Reconnaissance Observations of 21 Exoplanet Atmospheres with the Exoplanet Transmission Spectroscopy Imager

A Hot Jupiter with a Retrograde Orbit around a Sun-like Star and a Toy Model of Hot Jupiters in Wide Binary Star Systems

Precise Transit Photometry Using TESS II: Revisiting 28 Additional Transiting Systems With Updated Physical Properties

Gaia Search for (sub)stellar Companions of Exoplanet Hosts

Search for (sub)stellar companions of exoplanet hosts by exploring the second ESA-Gaia data release

Significant Transit Timing Offsets of 31 Hot Jupiters

Search for planets in hot Jupiter systems with multi-sector TESS photometry. I. No companions in planetary systems KELT-18, KELT-23, KELT-24, Qatar-8, WASP-62, WASP-100, WASP-119, and WASP-126

KELT-23A b: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones