WASP-19 b
Description: WASP-19b, formally named Banksia, is an exoplanet, notable for possessing one of the shortest orbital periods of any known planetary body: 0.79 days or approximately 18.932 hours. It has a mass close to that of Jupiter, but by comparison has a much larger radius ; making it nearly the size of a low-mass star. It orbits the star WASP-19 in the Vela constellation. At the time of discovery it was the shortest period hot Jupiter discovered as planets with shorter orbital periods had a rocky, or metallic composition.
Physical Properties
Mass (Jupiter mass): 1.154 MJ
Radius (Jupiter radius): 1.415 RJ
Density: 0.506 g/cm³
Equilibrium Temperature: 2113.0 K
Orbital Parameters
Orbital Period: 0.78883852 days
Semi-major Axis: 0.01652 AU
Eccentricity: 0.0126
Inclination: 79.08°
Host Star Properties
Host Star: WASP-19
Spectral Type: G8 V
Temperature: 5616.0 K
Stellar Mass: 0.97 M☉
Stellar Radius: 1.01 R☉
Discovery Information
Planet Letter: b
Object ID: 3.11448
Host ID: 2.103458
Discovery Date: 2010-01
Discovery Year: 2009
Discovery Method: Transit
Discovery Locale: Ground
Discovery Facility: SuperWASP
Discovery Instrument: iKon-L CCD Camera