XO-2 S c
Orbiting XO-2 S
XO-2 S c is an exoplanet orbiting the star XO-2 S, discovered in 2014 using the Radial Velocity method.
Minimum Mass (M sin i)
438.60
Earth masses
Orbital Period
120.1
days
Distance
151.4
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
438.60
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Ruggieri et al. 2024
Orbital Period
120.059+0.013−0.013days
Semi-Major Axis
0.4737+0.0085−0.0088au
M sin(i) (Earth masses)
438.60+15.89−15.89
M sin(i) (Jupiter masses)
1.3800+0.0500−0.0500
Eccentricity
0.1490+0.0060−0.0060
Epoch of Periastron
2458813.30+1.00−1.00days(BJD)
Argument of Periastron
-88.6+2.8−2.8deg
Radial Velocity Semi-Amplitude
58.00+0.40−0.40m/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 c
XO-2 S c orbits XO-2 S and was reported in 2014 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 438.6 Earth masses (M sin i) and an orbital period of 120.06 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