Planet HD 4747 b

Detailed information about planet HD 4747 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

HD 4747 b

Planet Status

Controversial

Discovered in

2016

Update

2023-06-18

Mass

70.5 (\pm 5.0)

M_J 3 publications

The CORALIE survey for southern extrasolar planets XIX. Brown dwarfs and stellar companions unveiled by radial velocity and astrometry
Optimized modelling of Gaia-Hipparcos astrometry for the detection of the smallest cold Jupiter and confirmation of seven low-mass companions
Evidence for a high mutual inclination between the cold Jupiter and transiting super Earth orbiting π Men

Mass*sin(i)

54.81 (\pm 1.28)

M_J 2 publications

The CORALIE survey for southern extrasolar planets XIX. Brown dwarfs and stellar companions unveiled by radial velocity and astrometry
The TRENDS High-Contrast Imaging Survey. VI. Discovery of a Mass, Age, and Metallicity Benchmark Brown Dwarf

Semi-Major Axis

10.6 (\pm 0.36)

AU 1 publication

The TRENDS High-Contrast Imaging Survey. VI. Discovery of a Mass, Age, and Metallicity Benchmark Brown Dwarf

Orbital Period

12196.0 (\begin{matrix} + 295.0 \\ - 270.0 \end{matrix})

day 2 publications

The CORALIE survey for southern extrasolar planets XIX. Brown dwarfs and stellar companions unveiled by radial velocity and astrometry
Evidence for a high mutual inclination between the cold Jupiter and transiting super Earth orbiting π Men

Eccentricity

0.732 (\pm 0.001)

3 publications

The CORALIE survey for southern extrasolar planets XIX. Brown dwarfs and stellar companions unveiled by radial velocity and astrometry
Evidence for a high mutual inclination between the cold Jupiter and transiting super Earth orbiting π Men
The TRENDS High-Contrast Imaging Survey. VI. Discovery of a Mass, Age, and Metallicity Benchmark Brown Dwarf

ω

266.93 (\pm 0.25)

deg 1 publication

Evidence for a high mutual inclination between the cold Jupiter and transiting super Earth orbiting π Men

T_peri

—

Radius

—

Inclination

50.0 (\pm 3.5)

deg 3 publications

Optimized modelling of Gaia-Hipparcos astrometry for the detection of the smallest cold Jupiter and confirmation of seven low-mass companions
Evidence for a high mutual inclination between the cold Jupiter and transiting super Earth orbiting π Men
The TRENDS High-Contrast Imaging Survey. VI. Discovery of a Mass, Age, and Metallicity Benchmark Brown Dwarf

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

703.0 (\pm 5.0)

m/s 2 publications

The CORALIE survey for southern extrasolar planets XIX. Brown dwarfs and stellar companions unveiled by radial velocity and astrometry
The TRENDS High-Contrast Imaging Survey. VI. Discovery of a Mass, Age, and Metallicity Benchmark Brown Dwarf

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

18 Jun 2023 Not a planet but a BD (Barbato et al. 2023)
07 Jul 2020: As of Jul 7 2020, the planet mass is 2 sigma above our conventional limit of 60 Jupiter mass. But in Crepp et al. (2016) is was less than 1 sigma above this limit. So, this mass is still uncertain, and we keep this object in the catalog, since it is still confirmed.
01 Apr 2016:
Crepp et al. (2016) : spectral type of HD 4747 b is approx L8 and effective temperature is approx 1700 +/- 100K.

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