HD 80606 System

Exoplanetary Scratchpad [SysBP Img]

Multiple star system (also known as Struve 1341) with a planet, which had a higher period (111 days) than any other known transiting planet and highest eccentricty (Halley's comet-like, epistellar distances to almost Earth-like distance) prior to the release of Kepler data. It is the nearest transiting Super Jupiter (4 MJ, radius slightly less than 1 RJ, 190ly). Its length of day is 36 hours. Discovered in 2001, but found to transit in 2009. Planet is the first one for which changes in weather have been observed. Potassium was detected from the high wind regions of the exosphere. In 2010 it was found to be only one of the two out of all 79 known transiting exoplanetary systems that could not support a habitable Earth-like planet, since its elongated orbit would destabilize any such planets. Planet thought to be in the process of becoming a Hot Jupiter. Observations suggested that energy transferred during closest approach to star would take 10 Billion Years to cause the orbit to circularize, meaning this tidal migration method may not be the preferred one to form hot jupiters.

HD 80606 System Web Pages

• Wikipedia
• http://beyondearthlyskies.blogspot.com/2013/10/periastron-heating-of-hd-80606-b.html

HD 80606 System In the News

Transit and Weather Detected (2009)

• http://jpl.nasa.gov/news/news.cfm?release=2009-010
• http://www.skyandtelescope.com/news/40535922.html
  
• http://www.skyandtelescope.com/news/38601177.html
  
• http://news.bbc.co.uk/2/hi/science/nature/7857749.stm
• http://www.bloomberg.com/apps/news?pid=20601087&sid=asv4KhjbWWBE&refer=home
• http://www.ciw.edu/news/spectacular_heating_planet_observed
• http://www.ucsc.edu/news_events/text.asp?pid=2703
• http://www.wired.com/wiredscience/2009/01/hot-planet/
• http://www.space.com/scienceastronomy/090128-hot-planet.html

Orbit would Destabilize any Earth-Like Habitable Planets (2010)

• http://www.astronomynow.com/news/n1006/08exo/

Potassium Detected in Atmosphere (2010)

• http://arxiv.org/abs/1008.4800

Challenges Hot Jupiter Formation Theories (2016)

• http://www.space.com/32491-hot-jupiter-defies-formation-theory.html
• https://www.washingtonpost.com/news/speaking-of-science/wp/2016/03/29/this-mysterious-hot-jupiter-is-on-a-wild-orbital-ride/
• http://news.mit.edu/2016/highly-eccentric-extreme-weather-exoplanet-0328

See Also

• Aliases: Struve 1341 System
• Exoplanets with Molecules Detected, Bright Stars With Transiting Planets
• Smallest Exoplanet Records