Planet HD 20794 e

Name HD 20794 e
Planet Status Confirmed
Discovered in 2017
Mass 0.015 ( -0.0027 +0.003 ) MJ
Mass*sin(i) 0.015 ( -0.0027 +0.003 ) MJ
Semi-Major Axis 0.509 (± 0.006) AU
Orbital Period 147.02 ( -0.91 +1.43 ) JD
Eccentricity 0.29 ( -0.17 +0.14 )
ω 268.0 ( -32.0 +47.0 ) deg
Tperi
Radius
Inclination
Update 2017-06-25
Detection Method Radial Velocity
Mass Detection Method
Radius Detection Method
Molecules
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 0.69 ( -0.13 +0.15 ) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names 82 Eri e

Star

HD 20794
Name HD 20794
Distance 6.06 pc
Spectral type G8V
Apparent magnitude V 4.26
Mass 0.813 ( -0.012 +0.018 ) MSun
Age 14.0 ( -5.0 +6.0 ) Gyr
Effective temperature 5490.0 (± 70.0) K
Radius 0.9 (± 0.03) RSun
Metallicity [Fe/H] -0.38 (± 0.06)
Detected Disc IR Excess
Magnetic Field
RA2000 03:19:56.0
Dec2000 -43:04:11
Alternate Names
Planetary system
3 planets

Observability Predictor

Remarks

Feng et al. 2017 : With "differential radial velocities" method, they identify four signals at 18, 89, 147 and 330 d and weak evidence for a 43 d and a 11.9 d signals.

Related publications

Evidence for at least three planet candidates orbiting HD20794
2017 FENG F., TUOMI M. & JONES H.
Astron. & Astrophys., 605, A103
paper  arxiv  ADS  

Characteristics of the closest known G-type exoplanet host 82 Eri
2012 BERNKOPF J., CHINI R., BUDA L.-S., DEMBKY T., DRASS H. & 2 additional authors
MNRAS, in press
paper  

Herschel imaging of 61 Vir: implications for the prevalence of debris in low-mass planetary systems
2012 WYATT M., KENNEDY G., SIBTHORPE B., MORO-MARTIN A., LESTRADE J.-F. & 12 additional authors
MNRAS
arxiv

The HARPS search for Earth-like planets in the habitable zone: I -- Very low-mass planets around HD20794, HD85512 and HD192310
2011 PEPE F., LOVIS Ch., SEGRANSAN D., BENZ W., BOUCHY F., DUMUSQUE X., MAYOR M., QUELOZ D., SANTOS N. & UDRY S.
Astron. & Astrophys., 534, A58
paper   arxiv