Planet G 9-40 b

Detailed information about planet G 9-40 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

G 9-40 b

Planet Status

Confirmed

Discovered in

2019

Update

2022-08-16

Mass

0.013 (\pm 0.00198)

M_J 2 publications

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40
A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Mass*sin(i)

—

Semi-Major Axis

0.0418 (\pm 0.00064)

AU 2 publications

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40
A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Orbital Period

5.7459982 (\pm 2e-06)

day 2 publications

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40
A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Eccentricity

— 2 publications

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40
A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

ω

— 1 publication

A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

T_peri

—

Radius

0.17 (\pm 0.0058)

R_J 2 publications

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40
A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Inclination

89.03 (\pm 0.1)

deg 1 publication

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40

Detection Method

Primary Transit

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Primary Transit

Primary transit

2459503.32682 (\pm 0.00042)

JD 2 publications

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40
A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Secondary transit

2458500.65047 (\pm 0.00033)

JD 1 publication

A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

λ

—

Impact Parameter b

0.513 (\pm 0.042)

2 publications

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40
A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Time V_r=0

—

Velocity Semiamplitude K

3.22 (\pm 0.49)

m/s 1 publication

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40

Calculated temperature

440.6 (\pm 7.6)

K 2 publications

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40
A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

2MASS J08585232+2104344 b, EPIC 212048748 b, EPIC 212048748.01, K2-313 b, LSPM J0858+2104 b, TIC 203214081 b, WISE J085852.46+210430.8 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

G 9-40

Distance

27.93 (\begin{matrix} + 0.04 \\ - 0.04 \end{matrix})

Spectral type

M2.5 V

Apparent magnitude V

13.8

Mass

0.29 (\pm 0.02)

M_Sun 1 publication

A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Age

9.9 (\begin{matrix} + 2.6 \\ - 4.1 \end{matrix})

Gyr 1 publication

A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Effective temperature

3348.0 (\pm 32.0)

K 1 publication

A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder

Radius

0.31 (\begin{matrix} + 0.01 \\ - 0.01 \end{matrix})

R_Sun

Metallicity [Fe/H]

0.04 (\begin{matrix} + 0.1 \\ - 0.11 \end{matrix})

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

08:58:52.3

Dec₂₀₀₀

+21:04:33.8

Alternate Names

2MASS J08585232+2104344, EPIC 212048748, K2-313, LSPM J0858+2104, TIC 203214081, WISE J085852.46+210430.8

No remarks

No link

Simbad
Most recent references (ADS)

Planet G 9-40 b

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 No remark

Other web pages No page

More data 2 references

Planet G 9-40 b

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 No remark

Other web pages No page

More data 2 references

Related publications

Precise mass determination for the keystone sub-Neptune planet transiting the mid-type M dwarf G 9-40

A sub-Neptune sized planet transiting the M2.5-dwarf G 9-40: Validation with the Habitable-zone Planet Finder