Planet GJ 229 B

Detailed information about planet GJ 229 B and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

GJ 229 B

Planet Status

Confirmed

Discovered in

1995

Publication Status

Published in a refereed paper

Update

2020-01-09

Mass

35.0 (\begin{matrix} + 15.0 \\ - 15.0 \end{matrix})

M_J 1 publication

Discovery of a cool brown dwarf

Mass*sin(i)

1.61971 (\pm 0.664)

M_J 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

Semi-Major Axis

19.433 (\begin{matrix} + 4.7 \\ - 6.9 \end{matrix})

AU 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

Orbital Period

52890.0 (\begin{matrix} + 19639.0 \\ - 24055.0 \end{matrix})

day 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

Eccentricity

0.03 (\begin{matrix} + 0.2 \\ - 0.03 \end{matrix})

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

Angular distance

—

ω

180.0 (\pm 180.0)

deg 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

T_peri

—

Radius

—

Inclination

—

Detection Method

Imaging

Mass Meas. Method

Spectrum

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

17.06 (\begin{matrix} + 1.3 \\ - 5.2 \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

1200.0 (\begin{matrix} + 0.0 \\ - 1200.0 \end{matrix})

K 1 publication

Discovery of a cool brown dwarf

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

Gliese 229 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

GJ 229

Distance

5.757 (\pm 0.0004)

Spectral type

M1 V

Apparent magnitude V

8.125

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.58 M_Sun 2 publications

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

Age

—

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

—

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

06:10:34.6

Dec₂₀₀₀

-21:51:52.7

Alternate Names

Gliese 229 is a binary system : Gliese 229 A is a red dwarf with a planet Gliese 229 A b. Gliese 229 B is a brown dwarf

No link

Simbad
Most recent references (ADS)

Planet GJ 229 B

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 3 planets

Remarks Some remarks

Other web pages No page

More data 2 references

Planet GJ 229 B

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 3 planets

Remarks Some remarks

Other web pages No page

More data 2 references

Related publications

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

Investigating Possible Binarity for GJ 229B

The Orbital Eccentricities of Directly Imaged Companions Using Observable-based Priors: Implications for Population-level Distributions

An Atmospheric Retrieval of the Brown Dwarf Gliese 229B

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

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

Discovery of a cool brown dwarf