Exoplanet

HD 99109 b

Orbiting HD 99109

Overview

HD 99109 b is an exoplanet orbiting the star HD 99109, discovered in 2005 using the Radial Velocity method.

Key Measurements

Minimum Mass (M sin i)

139.85

Earth masses

0500 M⊕

Orbital Period

439.3

days

0.1d10,000d

Distance

54.8

parsecs

Nearby10,000 pc

Radius (Earth radii)

Unknown

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

139.85

Radial-velocity minimum

Equilibrium Temperature

Unknown

Parameter source: Stassun et al. 2017

Orbital Period

439.300+5.600−5.600days

Semi-Major Axis

1.1100+0.0200−0.0200au

M sin(i) (Earth masses)

139.85+25.43−25.43

M sin(i) (Jupiter masses)

0.4400+0.0800−0.0800

Eccentricity

0.0900+0.1200−0.1200

Radial Velocity Semi-Amplitude

14.10+2.20−2.20m/s

Distance from Earth

54.8 pc (~179 ly)

Spectral Type

Unknown

Temperature

5282 K

Mass (Solar)

0.76 M☉

Radius (Solar)

0.98 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

171.0716°, -1.5298°

Discovery Method

Radial Velocity

Discovery Year

2005

Data Sources
NASA Exoplanet Archive

Source ID: HD 99109 b

System Context

HD 99109 b orbits HD 99109 and was reported in 2005 and was detected with the Radial Velocity method.

Published measurements list a minimum mass of 139.85 Earth masses (M sin i) and an orbital period of 439.3 days.

Catalog data places the system at about 54.8 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 99109