Planet HD 4747 b

Name HD 4747 b
Planet Status Confirmed
Discovered in 2016
Mass 60.2 (± 3.3) MJ
Mass*sin(i)
Semi-Major Axis 16.4 ( -3.3 +3.9 ) AU
Orbital Period 13835.67 ( -285.0 +314.0 ) JD
Eccentricity 0.74 (± 0.002)
ω
Tperi
Radius
Inclination 66.8 ( -6.4 +4.7 ) deg
Update 2016-08-21
Detection Method Radial Velocity
Mass Detection Method Radial Velocity
Radius Detection Method
Molecules
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

Crepp et al. (2016) : spectral type of HD 4747 b is approx L8 and effective temperature is approx 1700 +/- 100K.

Related publications

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, submitted
arxiv  ADS