Exoplanet

HD 111591 b

Orbiting HD 111591

Overview

HD 111591 b is an exoplanet orbiting the star HD 111591, discovered in 2017 using the Radial Velocity method.

Key Measurements

Minimum Mass (M sin i)

1398.45

Earth masses

0500 M⊕

Orbital Period

1056.4

days

0.1d10,000d

Distance

114.2

parsecs

Nearby10,000 pc

Radius (Earth radii)

Unknown

Minimum Mass, M sin(i) (Earth masses)

1398.45

Radial-velocity minimum

Equilibrium Temperature

Unknown

Parameter source: Jeong et al. 2018

Orbital Period

1056.400+14.300−14.300days

Semi-Major Axis

2.5000+0.1000−0.1000au

M sin(i) (Earth masses)

1398.45+127.13−127.13

M sin(i) (Jupiter masses)

4.4000+0.4000−0.4000

Eccentricity

0.2600+0.1000−0.1000

Epoch of Periastron

2455602.40+30.85−30.85days(JD)

Argument of Periastron

78.7+11.9−11.9deg

Radial Velocity Semi-Amplitude

59.00+3.00−3.00m/s

Distance from Earth

114.2 pc (~372 ly)

Spectral Type

Unknown

Temperature

4884 K

Mass (Solar)

1.94 M☉

Radius (Solar)

8.03 R☉

Luminosity

1.58 log L☉

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

192.5725°, 22.8631°

Discovery Method

Radial Velocity

Discovery Year

2017

Data Sources
NASA Exoplanet Archive

Source ID: HD 111591 b

System Context

HD 111591 b orbits HD 111591 and was reported in 2017 and was detected with the Radial Velocity method.

Published measurements list a minimum mass of 1,398.45 Earth masses (M sin i) and an orbital period of 1,056.4 days.

Catalog data places the system at about 114.2 parsecs from Earth and 1 known planet in the system.

Host star

Explore the stellar record for this system to compare temperature, spectral type, and known planets.

Open HD 111591