Exoplanet

XO-4 b

Orbiting XO-4

Overview

XO-4 b is an exoplanet orbiting the star XO-4, discovered in 2010 using the Transit method. It is a Jupiter-sized world.

Key Measurements

Radius

14.01

Earth radii

015 R⊕

Mass

451.32

Earth masses

0500 M⊕

Orbital Period

4.1

days

0.1d10,000d

Distance

272.7

parsecs

Nearby10,000 pc

Radius (Earth radii)

14.01

Mass (Earth masses)

451.32

Measured

Equilibrium Temperature

Unknown

Parameter source: Stassun et al. 2017

Orbital Period

4.125+0.000−0.000days

Planet Mass (Earth masses)

451.32+60.39−60.39

Planet Mass (Jupiter masses)

1.4200+0.1900−0.1900

Eccentricity

0.0000

Radial Velocity Semi-Amplitude

168.60+6.20−6.20m/s

Distance from Earth

272.7 pc (~889 ly)

Spectral Type

Unknown

Temperature

6397 K

Mass (Solar)

1.10 M☉

Radius (Solar)

1.45 R☉

Luminosity

Unknown

Planets in System

1

Stars in System

1

Coordinates (RA, Dec)

110.3880°, 58.2681°

Discovery Method

Transit

Discovery Year

2010

Data Sources
NASA Exoplanet Archive

Source ID: XO-4 b

System Context

XO-4 b orbits XO-4 and was reported in 2010 and was detected with the Transit method.

Published measurements list a radius of 14.01 Earth radii, a mass of 451.32 Earth masses, and an orbital period of 4.13 days.

Catalog data places the system at about 272.7 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 XO-4
XO-4 b