Planet HD 4747 b

Name HD 4747 b
Planet Status Confirmed
Discovered in 2016
Mass 66.6 (± 3.5) MJ
Mass*sin(i)
Semi-Major Axis 16.4 ( -3.3 +3.9 ) AU
Orbital Period 12090.0 (± 256.0) day
Eccentricity 0.734 (± 0.003) +
ω 87.7 (± 0.5) deg
Tperi
Radius
Inclination 50.0 (± 3.5) deg +
Update 2020-07-07
Detection Method Radial Velocity
Mass Detection Method Radial Velocity
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 755.3 ( -11.6 +12.4 ) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

HD 4747
Name HD 4747
Distance 18.69 (± 0.19) pc
Spectral type G9V
Apparent magnitude V 7.15
Mass 0.82 (± 0.04) MSun
Age 3.3 ( -1.9 +2.3 ) Gyr
Effective temperature 5340.0 (± 40.0) K
Radius 0.79 (± 0.03) RSun
Metallicity [Fe/H] -0.22 (± 0.04)
Detected Disc
Magnetic Field
RA2000 00:49:26.8
Dec2000 -23:12:45
Alternate Names
Planetary system 1 planet

More data

Observability Predictor

Remarks

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.

Related publications

Evidence for a high mutual inclination between the cold Jupiter and transiting super Earth orbiting π Men
2020 XUAN J. & WYATT M.
MNRAS, accepted
arxiv  

The TRENDS High-Contrast Imaging Survey. VI. Discovery of a Mass, Age, and Metallicity Benchmark Brown Dwarf
2016 CREPP J., GONZALEZ E., BECHTER E., MONTET B., JOHNSON J. et al.
ApJ, 831, 136
paper  arxiv  ADS