WASP-18 b
Orbiting WASP-18
WASP-18 b is an exoplanet orbiting the star WASP-18, discovered in 2009 using the Transit method. It is a Jupiter-sized world.
Radius
13.90
Earth radii
Mass
3241.85
Earth masses
Orbital Period
0.9
days
Distance
123.5
parsecs
Equilibrium Temp
2429
K
Radius (Earth radii)
13.90
Mass (Earth masses)
3241.85
Measured
Equilibrium Temperature
2429 K
Parameter source: Cortés-Zuleta et al. 2020
Orbital Period
0.941+0.000−0.000days
Semi-Major Axis
0.0202+0.0003−0.0003au
Planet Mass (Earth masses)
3241.85+111.24−111.24
Planet Mass (Jupiter masses)
10.2000+0.3500−0.3500
Eccentricity
0.0051+0.0070−0.0037
Argument of Periastron
-85.0+72.0−96.0deg
Radial Velocity Semi-Amplitude
1814.00+23.00−24.00m/s
Distance from Earth
123.5 pc (~403 ly)
Spectral Type
Unknown
Temperature
6432 K
Mass (Solar)
1.29 M☉
Radius (Solar)
1.32 R☉
Luminosity
0.43 log L☉
Planets in System
1
Stars in System
2
Coordinates (RA, Dec)
24.3545°, -45.6778°
Discovery Method
Transit
Discovery Year
2009
Source ID: WASP-18 b
WASP-18 b orbits WASP-18 and was reported in 2009 and was detected with the Transit method.
Published measurements list a radius of 13.9 Earth radii, a mass of 3,241.85 Earth masses, an orbital period of 0.94 days, and an equilibrium temperature near 2,429 K.
Catalog data places the system at about 123.5 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 WASP-18More planets in this system