Planet TWA 5 A (AB)b

Detailed information about planet TWA 5 A (AB)b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

TWA 5 A (AB)b

Planet Status

Confirmed

Discovered in

2009

Publication Status

—

Update

2025-08-16

Mass

25.0 (\begin{matrix} + 120.0 \\ - 20.0 \end{matrix})

M_J 1 publication

Orbital motion of the young brown dwarf companion TWA 5 B

Mass*sin(i)

—

Semi-Major Axis

146.0 (\begin{matrix} + 30.0 \\ - 45.0 \end{matrix})

AU 2 publications

Population-Level Eccentricity Distributions of Imaged Exoplanets and Brown Dwarf Companions: Dynamical Evidence for Distinct Formation Channels
Orbital motion of the young brown dwarf companion TWA 5 B

Orbital Period

660650.0 (\begin{matrix} + 197100.0 \\ - 306600.0 \end{matrix})

day 2 publications

Population-Level Eccentricity Distributions of Imaged Exoplanets and Brown Dwarf Companions: Dynamical Evidence for Distinct Formation Channels
Orbital motion of the young brown dwarf companion TWA 5 B

Eccentricity

0.43 (\begin{matrix} + 0.099 \\ - 0.1 \end{matrix})

2 publications

Population-Level Eccentricity Distributions of Imaged Exoplanets and Brown Dwarf Companions: Dynamical Evidence for Distinct Formation Channels
Orbital motion of the young brown dwarf companion TWA 5 B

Angular distance

—

ω

123.0 (\begin{matrix} + 41.0 \\ - 31.0 \end{matrix})

deg 1 publication

Population-Level Eccentricity Distributions of Imaged Exoplanets and Brown Dwarf Companions: Dynamical Evidence for Distinct Formation Channels

T_peri

—

Radius

—

Inclination

151.0 (\begin{matrix} + 12.0 \\ - 13.0 \end{matrix})

deg 1 publication

Population-Level Eccentricity Distributions of Imaged Exoplanets and Brown Dwarf Companions: Dynamical Evidence for Distinct Formation Channels

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

—

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

—

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

TWA 5 A (AB)

Distance

25.0 pc 1 publication

A Candidate Substellar Companion to CD –33°7795 (TWA 5)

Spectral type

M1.5

Apparent magnitude V

12.12

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.4 M_Sun 1 publication

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

Age

0.1 (\begin{matrix} + 0.09 \\ - 0.09 \end{matrix})

Gyr 1 publication

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

Effective temperature

—

Radius

—

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

11:31:55.0

Dec₂₀₀₀

-34:36:27.0

Alternate Names

—

2 Sep 2015: The star TWA 5 A is a binary, denoted by TWA 5 Aa+b by Neujhäeser et al (2010). By homogeneity with names of other circumbinry planets, we denote it TWA 5 A(AB).

No link

Simbad
Most recent references (ADS)

Planet TWA 5 A (AB)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 1 planet

Remarks Some remarks

Other web pages No page

More data 2 references

Planet TWA 5 A (AB)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 1 planet

Remarks Some remarks

Other web pages No page

More data 2 references

Related publications

Population-Level Eccentricity Distributions of Imaged Exoplanets and Brown Dwarf Companions: Dynamical Evidence for Distinct Formation Channels

Two decades of Exoplanetary Science with Adaptive Optics

SPOTS: The Search for Planets Orbiting Two Stars: II. First constraints on the frequency of sub-stellar companions on wide circumbinary orbits

Observations of Exoplanet Atmospheres

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

Orbital motion of the young brown dwarf companion TWA 5 B

A Candidate Substellar Companion to CD –33°7795 (TWA 5)