Planet Eps Ind Ab

Detailed information about planet Eps Ind Ab and its parameters.

Planet

Name
Eps Ind Ab
Planet Status
Confirmed
Discovered in
2018
Publication
Status
—
Update
2025-07-14
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
Angular distance
—
ω
Tperi
Radius
—
Inclination
Detection Method
Radial Velocity
Mass Meas. Method
Astrometry
Radius Meas. Method
—
Primary transit
—
Secondary transit
—
λ
—
Impact Parameter b
—
Time Vr=0
—
Velocity Semiamplitude K
Calculated temperature
—
Measured temperature
Hottest point longitude
—
Geometric albedo
—
Surface gravity log(g/gH)
—
Alternate Names
HD 209100 b
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

Matthews et al, 2024 : JWST data indicate that this is the only giant planet in the system despite significantly different orbital properties than the previously planet b (3 MJ planet with 8.8 ua semi-major axis). Sonora Elf Owl model with temperature 275K, metallicity=1.0, C/O ratio=2.5 solar and high eddy diff corfficient, significant CH4, CO2 and CO absorption are compatible with observations.

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Star

Name
eps Ind A
Distance
Spectral type
K5V
Apparent magnitude V
4.69
Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
Age
Effective temperature
Radius
Metallicity [Fe/H]
Detected Disc
—
Magnetic Field
—
RA2000
22:03:22.0
Dec2000
-56:47:10.0
Alternate Names
GJ 845 A, HD 209100, SOZ 1 A

24 Mar 2018 eps Ind A is a member of a triple system, accompanied by a binary brown dwarf at 1460 AU (Feng et al. 2018).

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