Banksia
WASP-19b, formally named Banksia, is an exoplanet, notable for possessing one of the shortest orbital periods of any known planetary body: days or approximately 18.932 hours. It has a mass close to that of Jupiter (1.15 Jupiter masses), but by comparison has a much larger radius (1.31 times that of Jupiter, or 0.13 Solar radii); 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.
Key facts
- Planet.name
- WASP-19b / Banksia
- Planet.image
- WASP-19b.jpg
- Planet.caption
- Artist’s impression of WASP-19b by ESA/Hubble
- Planet.discoverer
- Hebb et al. (SuperWASP)
- Planet.discovered
- December 10, 2009
- Planet.discovery_method
- Transit
- Planet.alt_names
- Banksia
- Planet.apsis
- astron
- Planet.star
- WASP-19
via Wikipedia infobox
Article
4 sectionsContents
- Nomenclature
- Atmosphere
- References
- External links
WASP-19b, formally named Banksia, is an exoplanet, notable for possessing one of the shortest orbital periods of any known planetary body: days or approximately 18.932 hours. It has a mass close to that of Jupiter (1.15 Jupiter masses), but by comparison has a much larger radius (1.31 times that of Jupiter, or 0.13 Solar radii); 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.
A study in 2012, utilizing the Rossiter–McLaughlin effect, determined the planetary orbit is well aligned with the equatorial plane of the star, misalignment equal to -15°.