|Extrasolar planet||List of extrasolar planets|
|Right ascension||(α)||23h 59m 36.07s|
|Declination||(δ)||−35° 01′ 52.9″|
|Semimajor axis||(a)||0.0793 AU|
|Orbital period||(P)||8.16 d|
|Density||(ρ)||1.85 g cm-3|
|Surface gravity||(g)||4.30 g|
|Temperature||(T)||950 (varies) K|
|Discovery date||April 1, 2008|
|Discoverer(s)||Cameron et al. (SuperWASP)|
WASP-8b is an extrasolar planet discovered (with their stars) in the SuperWASP batch -6b to -15b. On 1 April 2008, Dr. Don Pollacco of Queen’s University Belfast announced them at the RAS National Astronomy Meeting (NAM 2008).
At 49 parsecs away, this system is the closest of the WASP-discovered systems: closer to Earth than are HD 17156 and HD 149026. It is denser than Jupiter. If it were possible to stand on its surface, one would experience a gravitational pull of approximately 4 1⁄3g, resulting in difficulty breathing and eventual brain damage.
The equilibrium temperature is 950 K, but this oscillates due to eccentricity.
- Density is calculated from the mass and the radius, assuming a circular disc of eclipse relative to the Earth.
- Patricio Cubillos et al., "The Characterization of the Cool and Eccentric Exoplanet WASP-8b with Spitzer" in DPS Annual Meeting session "103.Extrasolar Planets: Atmospheric Chemistry and Characterization" (Monday, Oct 15, 2012, 11:40 AM -11:50 AM).
- "THE (SUPER)WASP FACTORY FINDS 10 NEW PLANETS IN THE LAST 6 MONTHS". 2008. Retrieved 2009-05-13.
- European Southern Observatory. "Artist’s impression of an exoplanet WASP 8b in a retrograde orbit".
- Didier Queloz et al. (2010). "WASP-8b: a retrograde transiting planet in a multiple system". Astronomy and Astrophysics 517: L1. arXiv:1006.5089. Bibcode:2010A&A...517L...1Q. doi:10.1051/0004-6361/201014768.
Media related to WASP-8b at Wikimedia Commons