HAT-P-20 b
Orbiting HAT-P-20
HAT-P-20 b is an exoplanet orbiting the star HAT-P-20, discovered in 2010 using the Transit method. It is a Neptune-sized world.
Radius
9.72
Earth radii
Mass
2302.90
Earth masses
Orbital Period
2.9
days
Distance
71.0
parsecs
Equilibrium Temp
970
K
Radius (Earth radii)
9.72
Mass (Earth masses)
2302.90
Measured
Equilibrium Temperature
970 K
Parameter source: Bakos et al. 2010
Orbital Period
2.875+0.000−0.000days
Semi-Major Axis
0.0361+0.0005−0.0005au
Planet Mass (Earth masses)
2302.90+59.43−59.43
Planet Mass (Jupiter masses)
7.2460+0.1870−0.1870
Eccentricity
0.0150+0.0050−0.0050
Argument of Periastron
317.0+130.0−130.0deg
Radial Velocity Semi-Amplitude
1246.00+8.10−8.10m/s
Distance from Earth
71.0 pc (~232 ly)
Spectral Type
K3
Temperature
4595 K
Mass (Solar)
0.76 M☉
Radius (Solar)
0.69 R☉
Luminosity
-0.72 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
111.9164°, 24.3361°
Discovery Method
Transit
Discovery Year
2010
Source ID: HAT-P-20 b
HAT-P-20 b orbits HAT-P-20 and was reported in 2010 and was detected with the Transit method.
Published measurements list a radius of 9.72 Earth radii, a mass of 2,302.9 Earth masses, an orbital period of 2.88 days, and an equilibrium temperature near 970 K.
Catalog data places the system at about 71 parsecs from Earth, a host star classified as K3, 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 HAT-P-20