Exoplanet

HD 187123 c

Orbiting HD 187123

Overview

HD 187123 c is an exoplanet orbiting the star HD 187123, discovered in 2008 using the Radial Velocity method.

Key Measurements

Minimum Mass (M sin i)

632.46

Earth masses

0500 M⊕

Orbital Period

3810.0

days

0.1d10,000d

Distance

46.0

parsecs

Nearby10,000 pc

Radius (Earth radii)

Unknown

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

632.46

Radial-velocity minimum

Equilibrium Temperature

Unknown

Parameter source: Wright et al. 2009

Orbital Period

3810.000+420.000420.000days

Semi-Major Axis

4.8900+0.53000.5300au

M sin(i) (Earth masses)

632.46+79.4579.45

M sin(i) (Jupiter masses)

1.9900+0.25000.2500

Eccentricity

0.2520+0.03300.0330

Epoch of Periastron

2453580.04+0.300.30days

Argument of Periastron

243.0+19.019.0deg

Radial Velocity Semi-Amplitude

25.50+1.501.50m/s

Distance from Earth

46.0 pc (~150 ly)

Spectral Type

Unknown

Temperature

5790 K

Mass (Solar)

1.04 M☉

Radius (Solar)

1.15 R☉

Luminosity

0.13 log L☉

Planets in System

2

Stars in System

1

Coordinates (RA, Dec)

296.7429°, 34.4190°

Discovery Method

Radial Velocity

Discovery Year

2008

Data Sources

Source ID: HD 187123 c

System Context

HD 187123 c orbits HD 187123 and was reported in 2008 and was detected with the Radial Velocity method.

Published measurements list a minimum mass of 632.46 Earth masses (M sin i) and an orbital period of 3,810 days.

Catalog data places the system at about 46 parsecs from Earth and 2 known planets in the system.

Host star

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

Open HD 187123

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