Planet HD 203030 b

Detailed information about planet HD 203030 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

HD 203030 b

Planet Status

Confirmed

Discovered in

2017

Update

2024-10-30

Mass

11.0 (\begin{matrix} + 4.0 \\ - 4.0 \end{matrix})

M_J 1 publication

The Prototypical Young L/T-Transition Dwarf HD 203030B Likely Has Planetary Mass

Mass*sin(i)

—

Semi-Major Axis

487.0 AU 1 publication

HD 203030B: An Unusually Cool Young Substellar Companion near the L/T Transition

Orbital Period

—

Eccentricity

—

ω

—

T_peri

—

Radius

1.3 (\begin{matrix} + 0.06 \\ - 0.04 \end{matrix})

R_J 1 publication

The Prototypical Young L/T-Transition Dwarf HD 203030B Likely Has Planetary Mass

Inclination

—

Detection Method

Imaging

Mass Meas. Method

Spectrum

Radius Meas. Method

Theoretical

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

—

Measured temperature

1040.0

K 1 publication

The Prototypical Young L/T-Transition Dwarf HD 203030B Likely Has Planetary Mass

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

V457 Vul b, HIP 105232 b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference
H2O
H2O	Measurements	Detected				2019 - MILES-PAEZ P.

It is an L7.5+/-0.5 brown dwarf.

No link

Star

Name

HD 203030

Distance

39.25 (\pm 0.095)

pc 1 publication

The Revised TESS Input Catalog and Candidate Target List

Spectral type

G8V

Apparent magnitude V

8.43

Mass

0.94 (\pm 0.126)

M_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Age

0.25 (\begin{matrix} + 0.07 \\ - 0.07 \end{matrix})

Gyr 2 publications

The Brown Dwarf Kinematics Project. II. Details on Nine Wide Common Proper Motion Very Low Mass Companions to Nearby Stars
The Prototypical Young L/T-Transition Dwarf HD 203030B Likely Has Planetary Mass

Effective temperature

5418.3 (\pm 138.58)

K 1 publication

The Revised TESS Input Catalog and Candidate Target List

Radius

0.875 (\pm 0.0524)

R_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

21:18:58.0

Dec₂₀₀₀

+26:13:50.0

Alternate Names

V457 Vul

No remarks

No link

Simbad
Most recent references (ADS)

Planet HD 203030 b

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 1 molecules

Remarks Some remarks

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 HD 203030 b

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 1 molecules

Remarks Some remarks

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

A Mid-infrared Study of Directly Imaged Planetary-mass Companions Using Archival Spitzer/IRAC Images

Host star metallicity of directly imaged wide-orbit planets: implications for planet formation

Cloud Atlas: Variability in and out of the Water Band in the Planetary-mass HD 203030B Points to Cloud Sedimentation in Low-gravity L Dwarfs

The Revised TESS Input Catalog and Candidate Target List

The Prototypical Young L/T-Transition Dwarf HD 203030B Likely Has Planetary Mass

The Brown Dwarf Kinematics Project. II. Details on Nine Wide Common Proper Motion Very Low Mass Companions to Nearby Stars

HD 203030B: An Unusually Cool Young Substellar Companion near the L/T Transition