Planet 51 Eri b

Name 51 Eri b
Planet Status Confirmed
Discovered in 2015
Mass 2.6 (± 0.3) MJ +
Mass*sin(i)
Semi-Major Axis 11.1 ( -1.3 +4.2 ) AU +
Orbital Period 10260.0 ( -1800.0 +6300.0 ) day +
Eccentricity 0.49 (± 0.15) +
ω 84.0 (± 58.0) deg +
Tperi 2452014.79 (± 12.0) JD
Radius 1.11 ( -0.13 +0.16 ) RJ
Inclination 136.0 (± 11.0) deg +
Update 2019-10-24
Detection Method Imaging
Mass Detection Method Spectrum
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 700.0 K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH) 3.5
Alternate Names

Star

51 Eri
Name 51 Eri
Distance 29.4 (± 0.3) pc
Spectral type F0IV
Apparent magnitude V 5.223
Mass 1.75 (± 0.05) MSun
Age 0.02 (± 0.006) Gyr
Effective temperature
Radius
Metallicity [Fe/H] -0.027
Detected Disc IR Excess
Magnetic Field
RA2000 04:37:36.1
Dec2000 -02:28:25
Alternate Names
Planetary system 1 planet

More data

Atmospheric parameters

Temperatures

Data Source Type Result Value Result Figure Notes Reference

Molecules

Molecule Data Source Type Result Value Result Figure Notes Reference
CH4 Measurements Detected 2015 - MACINTOSH
H2O Measurements Detected 2015 - MACINTOSH

Observability Predictor

Remarks

28 Sep 2015 : The planet 51 Eri b has been confirmed by astrometry of the planet position (De Rosa et al. 2015)

Related publications

Hint of curvature in the orbital motion of the exoplanet 51 Eridani b using 3 years of VLT/SPHERE monitoring
2019 MAIRE A.-L., RODET L., CANTALOUBE F., GALICHER R., BRANDNER W. et al.
Astron. & Astrophys., 624, A118
paper  arxiv  

An updated visual orbit of the directly-imaged exoplanet 51 Eridani b and prospects for a dynamical mass measurement with Gaia
2019 DE ROSA R., NIELSEN E., WANG J., AMMONS M., DUCHENE G. et al.
Astron. J., accepted
arxiv

On the Mass Function, Multiplicity, and Origins of Wide-Orbit Giant Planets
2019 WAGNER K., APAIL D. & KRATTER K.
ApJ, accepted
arxiv  

The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics From 10-100 AU
2019 NIELSEN E., DE ROSA R., MACINTOSH B., WANG J., RUFFIO J.-B. et al.
Astron. J., 158, 13
paper  arxiv  

Two decades of Exoplanetary Science with Adaptive Optics G. Chauvin
2018 CHAUVIN, G.
SPIE Astronomical Telescopes and Instrumentation
arxiv   ADS  

Spectral and atmospheric characterization of 51 Eridani b using VLT/SPHERE
2017 SAMLAND M., MOLLIERE P., BONNEFOY M., MAIRE A.-L., CANTALLOUBE F. et al.
Astron. & Astrophys., accepted

Toward an initial mass function for giant planets
2017 CARRERA D., DAVIES M. & JOHANSEN A.
MNRAS, 478, 691
paper  arxiv  

Characterizing 51 Eri b from 1-5 μm: a partly-cloudy exoplanet
2017 RAJAN A., RAMEAU J., DE ROSA R., MARLEY M., GRAHAM J. et al.
Astron. J., 154, 10
paper  arxiv  

Imaging Extrasolar Giant Planets
2016 BOWLER B.
PASP, 128, 102001
paper  arxiv  ADS  

Photolytic Hazes in the Atmosphere of 51 Eri b
2016 ZAHNLE K., MARLEY M., MORLEY C. & MOSES J.
ApJ, 824, 137
paper  arxiv  ADS  

On the Composition of Young, Directly Imaged Giant Planets
2016 MOSES, J., MARLEY, M., ZAHNLE, K. & 6 additional authors
ApJ, accepted
arxiv  paper   ADS  

Astrometric Confirmation and Preliminary Orbital Parameters of the Young Exoplanet 51 Eridani b with the Gemini Planet Imager
2015 DE ROSA R., NIELSEN E., BLUNT S., GRAHAM J., KONOPACKY Q. et al.
ApJ Letters, 814, L3
paper  arxiv  ADS  

Dynamical Masses of Young M Dwarfs. I. Masses and Orbital Parameters of GJ 3305 AB, the Wide Binary Companion to the Imaged Exoplanet Host 51 Eri
2015 MONTET B., BOWLER B., SHKOLNIK E., DECK K., WANG J. et al.
ApJ Letters, 813, L11
paper  arxiv   ADS

Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager
2015 MACINTOSH, B., GRAHAM, J., BARMAN, T., De ROSA, R., KONOPACKY, Q. & 83 additional authors
Science, in press
arxiv  Science   ADS