Planet GJ 229 c

Detailed information about planet GJ 229 c and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

GJ 229 c

Planet Status

Confirmed

Discovered in

2014

Update

2024-08-28

Mass

0.03153 (\begin{matrix} + 0.01054 \\ - 0.0192 \end{matrix})

M_J

Mass*sin(i)

0.03153 (\begin{matrix} + 0.01054 \\ - 0.0192 \end{matrix})

M_J 2 publications

Search for Nearby Earth Analogs. II. detection of five new planets, eight planet candidates, and confirmation of three planets around nine nearby M dwarfs
Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics

Semi-Major Axis

0.896 (\begin{matrix} + 0.69 \\ - 0.073 \end{matrix})

AU 2 publications

Search for Nearby Earth Analogs. II. detection of five new planets, eight planet candidates, and confirmation of three planets around nine nearby M dwarfs
Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics

Orbital Period

523.242 (\begin{matrix} + 13.0 \\ - 7.0 \end{matrix})

day 2 publications

Search for Nearby Earth Analogs. II. detection of five new planets, eight planet candidates, and confirmation of three planets around nine nearby M dwarfs
Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics

Eccentricity

0.17 (\begin{matrix} + 0.07 \\ - 0.17 \end{matrix})

2 publications

Search for Nearby Earth Analogs. II. detection of five new planets, eight planet candidates, and confirmation of three planets around nine nearby M dwarfs
Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics

ω

283.0 (\begin{matrix} + 45.0 \\ - 275.0 \end{matrix})

deg 2 publications

Search for Nearby Earth Analogs. II. detection of five new planets, eight planet candidates, and confirmation of three planets around nine nearby M dwarfs
Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics

T_peri

—

Radius

—

Inclination

—

Detection Method

Radial Velocity

Mass Meas. Method

Spectrum

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

1.63 (\begin{matrix} + 0.4 \\ - 1.0 \end{matrix})

m/s 1 publication

Search for Nearby Earth Analogs. II. detection of five new planets, eight planet candidates, and confirmation of three planets around nine nearby M dwarfs

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

GJ 229 Ab, HD 42581 c

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference
CH4
CH4	Measurements	Detected				2019 - BRANDT T.

Alternative designation is "GJ 229 Ab" if the outer brown dwarf "GJ 229 b" is regarded more like a stellar rather than substellar/planetary component.

No link

Star

Name

GJ 229

Distance

5.75624 (\pm 0.001525)

pc 1 publication

The Revised TESS Input Catalog and Candidate Target List

Spectral type

M1V

Apparent magnitude V

8.125

Mass

0.544 (\pm 0.041)

M_Sun 2 publications

Search for Nearby Earth Analogs. II. detection of five new planets, eight planet candidates, and confirmation of three planets around nine nearby M dwarfs
The Revised TESS Input Catalog and Candidate Target List

Age

2.45 (\pm 0.2)

Gyr 1 publication

The cool brown dwarf Gliese 229 B is a close binary

Effective temperature

3564.0 K 1 publication

Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics

Radius

0.548 (\pm 0.043)

R_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

06:10:34.6

Dec₂₀₀₀

-21:51:52.7

Alternate Names

HD 42581, NAJ 1

No remarks

No link

Simbad
Most recent references (ADS)

Planet GJ 229 c

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 4 planets

Remarks No remark

Other web pages No page

More data 2 references

Planet GJ 229 c

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 4 planets

Remarks No remark

Other web pages No page

More data 2 references

Related publications

Atmospheric abundances and bulk properties of the binary brown dwarf Gliese 229 Bab from JWST/MIRI spectroscopy

Discovery of the Binarity of Gliese 229B, and Constraints on the System's Properties

The cool brown dwarf Gliese 229 B is a close binary

Planetary system architectures with low-mass inner planets: Direct imaging exploration of mature systems beyond 1 au

Investigating Possible Binarity for GJ 229B

The Initial Mass Function Based on the Full-sky 20-pc Census of ∼3,600 Stars and Brown Dwarfs

Search for Nearby Earth Analogs. II. detection of five new planets, eight planet candidates, and confirmation of three planets around nine nearby M dwarfs

A Dynamical Mass of 70±5 Jupiter Masses for Gliese 229B, the First Imaged T Dwarf

The Revised TESS Input Catalog and Candidate Target List

Physical Properties of Gliese 229B Based on Newly Determined Carbon and Oxygen Abundances of Gliese 229A

Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics