Planet K2-237 Ab

Detailed information about planet K2-237 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

K2-237 Ab

Planet Status

Confirmed

Discovered in

2018

Publication Status

Published in a refereed paper

Update

2025-09-04

Mass

1.236 (\begin{matrix} + 0.044 \\ - 0.044 \end{matrix})

M_J 1 publication

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Mass*sin(i)

—

Semi-Major Axis

0.0353 (\begin{matrix} + 0.0012 \\ - 0.0012 \end{matrix})

AU 1 publication

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Orbital Period

2.1805577 (\begin{matrix} + 5.7e-06 \\ - 5.7e-06 \end{matrix})

day 1 publication

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Eccentricity

0.0

Angular distance

—

ω

90.0 deg

T_peri

—

Radius

1.642 (\begin{matrix} + 0.05 \\ - 0.05 \end{matrix})

R_J 1 publication

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Inclination

84.6 (\begin{matrix} + 0.3 \\ - 0.3 \end{matrix})

deg 1 publication

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Detection Method

Primary Transit

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Primary Transit

Primary transit

2457684.8101 (\pm 0.0001)

JD 1 publication

K2-237 b and K2-238 b: discovery and characterization of two new transiting hot Jupiters from K2

Secondary transit

—

λ

—

Impact Parameter b

0.52 (\begin{matrix} + 0.057 \\ - 0.002 \end{matrix})

1 publication

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Time V_r=0

—

Velocity Semiamplitude K

167.9 (\begin{matrix} + 4.7 \\ - 3.1 \end{matrix})

m/s 1 publication

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Calculated temperature

1838.0 (\begin{matrix} + 38.0 \\ - 38.0 \end{matrix})

K 1 publication

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

EPIC 229426032 b, WISE J165504.52-284238.0 b, TOI-1049.01, 2MASS J16550453-2842380 b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

K2-237 b is annouced almost simultaneously by Soto et al. (2018) et Smith et al. (2018).
See also Planets in Binaries webpage.

No link

Star

Name

K2-237 A

Distance

315.0 (\begin{matrix} + 7.22 \\ - 6.91 \end{matrix})

Spectral type

F8V

Apparent magnitude V

11.6

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.256 (\begin{matrix} + 0.056 \\ - 0.062 \end{matrix})

M_Sun 1 publication

The K2 and TESS Synergy. II. Revisiting 26 Systems in the TESS Primary Mission

Age

1.09 (\begin{matrix} + 1.5 \\ - 0.78 \end{matrix})

Gyr 1 publication

The K2 and TESS Synergy. II. Revisiting 26 Systems in the TESS Primary Mission

Effective temperature

6180.0 (\begin{matrix} + 160.0 \\ - 140.0 \end{matrix})

K 1 publication

The K2 and TESS Synergy. II. Revisiting 26 Systems in the TESS Primary Mission

Radius

1.236 (\begin{matrix} + 0.043 \\ - 0.036 \end{matrix})

R_Sun 1 publication

The K2 and TESS Synergy. II. Revisiting 26 Systems in the TESS Primary Mission

Metallicity [Fe/H]

0.337 (\pm 0.076)

1 publication

The K2 and TESS Synergy. II. Revisiting 26 Systems in the TESS Primary Mission

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

16:55:04.5

Dec₂₀₀₀

-28:42:38.0

Alternate Names

EPIC 229426032, 2MASS J16550453-2842380, WISE J165504.52-284238.0, TOI-1049

Eeles-Nolle & Armstrong (2025): A faint companion star, likely a low-mass M dwarf or even a white dwarf (Gaia DR3 6032747008550759168, G = 19.56), lies 32.23 arcseconds away (10,150 AUs at 315 pc).

No link

Simbad
Most recent references (ADS)

Planet K2-237 Ab

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

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 K2-237 Ab

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

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

A high stellar multiplicity rate amongst TESS planet candidates in the Neptunian desert using Gaia DR3 astrometry

PLATOSpec's first results: planets WASP-35b and TOI-622b are on aligned orbits, and K2-237b is on a polar orbit

The K2 and TESS Synergy. II. Revisiting 26 Systems in the TESS Primary Mission

Empirical limb-darkening coefficients & transit parameters of known exoplanets from TESS

Original Research By Young Twinkle Students (ORBYTS): Ephemeris Refinement of Transiting Exoplanets

Significant Transit Timing Offsets of 31 Hot Jupiters

The K2 and TESS Synergy. I. Updated Ephemerides and Parameters for K2-114, K2-167, K2-237, and K2-261

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

K2-237 b and K2-238 b: discovery and characterization of two new transiting hot Jupiters from K2