XO-2 S b
Orbiting XO-2 S
XO-2 S b is an exoplanet orbiting the star XO-2 S, discovered in 2014 using the Radial Velocity method.
Minimum Mass (M sin i)
82.64
Earth masses
Orbital Period
18.2
days
Distance
151.4
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
82.64
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Ruggieri et al. 2024
Orbital Period
18.220+0.001−0.001days
Semi-Major Axis
0.1347+0.0025−0.0025au
M sin(i) (Earth masses)
82.64+3.18−3.18
M sin(i) (Jupiter masses)
0.2600+0.0100−0.0100
Eccentricity
0.1500+0.0200−0.0200
Epoch of Periastron
2458834.80+0.40−0.40days(BJD)
Argument of Periastron
-59.1+7.0−7.0deg
Radial Velocity Semi-Amplitude
20.40+0.43−0.43m/s
Distance from Earth
151.4 pc (~494 ly)
Spectral Type
G8 V
Temperature
5325 K
Mass (Solar)
0.98 M☉
Radius (Solar)
1.02 R☉
Luminosity
Unknown
Planets in System
4
Stars in System
2
Coordinates (RA, Dec)
117.0310°, 50.2169°
Discovery Method
Radial Velocity
Discovery Year
2014
Source ID: XO-2 S b
XO-2 S b orbits XO-2 S and was reported in 2014 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 82.64 Earth masses (M sin i) and an orbital period of 18.22 days.
Catalog data places the system at about 151.4 parsecs from Earth, a host star classified as G8 V, and 4 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open XO-2 S