Planet Gaia-6 b

Detailed information about planet Gaia-6 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

Gaia-6 b

Planet Status

Confirmed

Discovered in

2024

Publication Status

Published in a refereed paper

Update

2025-12-05

Mass

19.8 (\pm 0.5)

M_J 2 publications

Machine learning-based identification of Gaia astrometric exoplanet orbits
The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Mass*sin(i)

8.7 (\pm 1.6)

M_J 1 publication

The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Semi-Major Axis

4.85 (\begin{matrix} + 0.02 \\ - 0.01 \end{matrix})

AU 1 publication

The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Orbital Period

3420.05 (\begin{matrix} + 21.9 \\ - 18.25 \end{matrix})

day 2 publications

Machine learning-based identification of Gaia astrometric exoplanet orbits
The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Eccentricity

0.85 (\pm 0.002)

1 publication

The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Angular distance

—

ω

-105.7 (\begin{matrix} + 0.4 \\ - 0.3 \end{matrix})

deg

T_peri

—

Radius

—

Inclination

130.3 (\begin{matrix} + 1.6 \\ - 1.9 \end{matrix})

deg 1 publication

The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Detection Method

Astrometry

Mass Meas. Method

Astrometry

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

185.0 (\pm 53.0)

m/s

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

Gaia-ASOI-009 b, HD 128717 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

Gaia-6

Distance

73.74 (\pm 0.12)

pc 2 publications

The Revised TESS Input Catalog and Candidate Target List
The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Spectral type

F8V

Apparent magnitude V

8.29

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.212 (\begin{matrix} + 0.058 \\ - 0.068 \end{matrix})

M_Sun 3 publications

Machine learning-based identification of Gaia astrometric exoplanet orbits
The Revised TESS Input Catalog and Candidate Target List
The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Age

1.4 (\pm 0.3)

Gyr 1 publication

The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Effective temperature

6210.0 (\pm 40.0)

K 2 publications

The Revised TESS Input Catalog and Candidate Target List
The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Radius

1.248 (\pm 0.024)

R_Sun 2 publications

The Revised TESS Input Catalog and Candidate Target List
The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Metallicity [Fe/H]

0.16 (\pm 0.08)

1 publication

The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

14:36:21.3

Dec₂₀₀₀

+57:33:38.4

Alternate Names

Gaia-ASOI-009, HD 128717

No remarks

No link

Simbad
Most recent references (ADS)

Planet Gaia-6 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 No remark

Other web pages No page

More data 2 references

Planet Gaia-6 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 No remark

Other web pages No page

More data 2 references

Related publications

Machine learning-based identification of Gaia astrometric exoplanet orbits

The GAPS programme at TNG LXXI. HD 128717 B/Gaia-6 B: a long-period eccentric low-mass brown dwarf from astrometry and radial velocities

Ground-based RV follow-up of Gaia DR3 astrometric exoplanet candidates around bright stars

Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure

Gaia exoplanet archive

The Revised TESS Input Catalog and Candidate Target List