Exoplanet

HD 189733 b

Orbiting HD 189733

Overview

HD 189733 b is an exoplanet orbiting the star HD 189733, discovered in 2005 using the Radial Velocity method. It is a Jupiter-sized world.

Key Measurements

Radius

12.67

Earth radii

015 R⊕

Mass

359.15

Earth masses

0500 M⊕

Orbital Period

2.2

days

0.1d10,000d

Distance

19.8

parsecs

Nearby10,000 pc

Radius (Earth radii)

12.67

Mass (Earth masses)

359.15

Measured

Equilibrium Temperature

Unknown

Parameter source: Stassun et al. 2017

Orbital Period

2.219+0.000−0.000days

Planet Mass (Earth masses)

359.15+25.43−25.43

Planet Mass (Jupiter masses)

1.1300+0.0800−0.0800

Eccentricity

0.0000

Radial Velocity Semi-Amplitude

205.00+6.00−6.00m/s

Distance from Earth

19.8 pc (~64 ly)

Spectral Type

Unknown

Temperature

5052 K

Mass (Solar)

0.79 M☉

Radius (Solar)

0.75 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

2

Coordinates (RA, Dec)

300.1821°, 22.7098°

Discovery Method

Radial Velocity

Discovery Year

2005

Data Sources
NASA Exoplanet Archive

Source ID: HD 189733 b

System Context

HD 189733 b orbits HD 189733 and was reported in 2005 and was detected with the Radial Velocity method.

Published measurements list a radius of 12.67 Earth radii, a mass of 359.15 Earth masses, and an orbital period of 2.22 days.

Catalog data places the system at about 19.8 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 189733