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WASP-159
Star in the constellation Caelum From Wikipedia, the free encyclopedia
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WASP-159 is a star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 12.84,[3] making it readily visible in telescopes with an aperture of at least four inches, but not to the naked eye. The star is located relatively far at a distance of 2,380 light-years based on recent parallax measurements from the Gaia spacecraft,[2] but it is receding with a heliocentric radial velocity of 35.2 km/s.[4]
WASP-159 has a stellar classification of F9 indicating that it is a late F-type star.[4] It appears to be ceasing hydrogen fusion at its core and evolving towards the red giant branch.[4] It has 1.41 times the Sun's mass and 2.11 times the radius of the Sun.[4] It radiates 4.674 times the luminosity of the Sun[2] from its photosphere at an effective temperature of 6,120 K,[4] giving it a whitish-yellow hue when viewed in a telescope. WASP-159 is metal enriched with an iron abundance 166% that of the Sun, and it is estimated to be 3.4 billion years old.[4]
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Planetary system
In 2019, SuperWASP discovered a transiting exoplanet orbiting the star after spectral and radial velocity observations. WASP-159b is a "bloated" hot Jupiter that takes roughly 3.8 days to revolve around its host star in a circular orbit.[4]
References
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