Planet GJ 15 Ab

Detailed information about planet GJ 15 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

GJ 15 Ab

Planet Status

Confirmed

Discovered in

2014

Publication Status

—

Update

2026-04-08

Mass

0.017 (\begin{matrix} + 0.005 \\ - 0.002 \end{matrix})

M_J 1 publication

A Smooth Transition from Giant Planets to Brown Dwarfs from the Radial Occurrence Distribution

Mass*sin(i)

0.00953 (\begin{matrix} + 0.00145 \\ - 0.00138 \end{matrix})

M_J 2 publications

The HADES RV Programme with HARPS-N@TNG VIII. Gl15A: A multiple wide planetary system sculpted by binary interaction
The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth

Semi-Major Axis

0.072 (\pm 0.004)

AU 2 publications

The HADES RV Programme with HARPS-N@TNG VIII. Gl15A: A multiple wide planetary system sculpted by binary interaction
The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth

Orbital Period

11.4407 (\pm 0.0016)

day 2 publications

The HADES RV Programme with HARPS-N@TNG VIII. Gl15A: A multiple wide planetary system sculpted by binary interaction
The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth

Eccentricity

0.094 (\begin{matrix} + 0.091 \\ - 0.065 \end{matrix})

1 publication

The HADES RV Programme with HARPS-N@TNG VIII. Gl15A: A multiple wide planetary system sculpted by binary interaction

Angular distance

—

ω

60.0 (\begin{matrix} + 110.0 \\ - -20.0 \end{matrix})

deg 1 publication

The HADES RV Programme with HARPS-N@TNG VIII. Gl15A: A multiple wide planetary system sculpted by binary interaction

T_peri

2456995.86 JD 2 publications

The HADES RV Programme with HARPS-N@TNG VIII. Gl15A: A multiple wide planetary system sculpted by binary interaction
The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth

Radius

—

Inclination

—

Detection Method

Radial Velocity

Mass Meas. Method

Radial Velocity

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

1.68 (\pm 0.18)

m/s 1 publication

The HADES RV Programme with HARPS-N@TNG VIII. Gl15A: A multiple wide planetary system sculpted by binary interaction

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

HD 1326A b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

Star

Name

GJ 15 A

Distance

3.587 pc 1 publication

The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth

Spectral type

M2V

Apparent magnitude V

8.08

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.375 M_Sun 1 publication

The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth

Age

—

Effective temperature

3567.0 K

Radius

0.3863 R_Sun 1 publication

The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth

Metallicity [Fe/H]

-0.32 1 publication

The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

00:18:22.9

Dec₂₀₀₀

+44:01:22.6

Alternate Names

HIP 1475, HD 1326 A, GX And, Groombridge 34 A, Gmb 34 A

No remarks

No link

Simbad
Most recent references (ADS)

Planet GJ 15 Ab

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 2 planets

Remarks No remark

Other web pages No page

More data 2 references

Planet GJ 15 Ab

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 2 planets

Remarks No remark

Other web pages No page

More data 2 references

Related publications

A Smooth Transition from Giant Planets to Brown Dwarfs from the Radial Occurrence Distribution

Gaia Search for (sub)stellar Companions of Exoplanet Hosts

HADES RV Programme with HARPS-N at TNG XV. Planetary occurrence rates around early-M dwarfs

Galactic cosmic ray propagation through M dwarf planetary systems

Search for stellar companions of exoplanet host stars by exploring the second ESA-Gaia data release

Precise Radial Velocities of Cool Low Mass Stars With iSHELL

The CARMENES search for exoplanets around M dwarfs. First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems

The HADES RV Programme with HARPS-N@TNG VIII. Gl15A: A multiple wide planetary system sculpted by binary interaction

HADES RV Programme with HARPS-N at TNG: V. A super-Earth on the inner edge of the habitable zone oft he nearby M-dwarf GJ 625

The NASA-UC-UH Eta-Earth Program: IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth