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Hottest Measured Planet Record

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Exoplanetary Scratchpad

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The hottest measured planets.

Hottest Measured Planet Record Web PagesEdit

Hottest Measured Planet Record In the NewsEdit

Sample (Year)Edit

Hottest Measured Record HistoryEdit

  • WASP-33 System - Aka HD 15082, this is the only known Delta Scuti variable star (kA5 hA8 mF4) known to host a planet. The star is much hotter than the Sun and 50% more massive. The planet is a retrograde inflated hot super Jupiter and is by far hottest measured exoplanet (3150C), 900C hotter than WASP-12b, and hotter than some red dwarf stars. It is one of the 6 out of 27 planets analyzed by the WASP team found to orbit backwards around its star in 2010. The planet may be responsible for the star's pulsations.
  • WASP-12 System - The shortest period transiting Hot Jupiter known when discovered in 2008 and the first carbon-rich planet ever found (more Carbon than Oxygen). One of the two largest known planets at 1.79 Jupiter radii. Hottest known exoplanet at time of its discovery. Planet is being ripped apart by star. It is stretched in the shape of a rugby ball and leaves a ring around its star. Huge cloud of material detected around the planet containing elements never before detected on an exoplanet. This cloud is much larger than expected, and shrouds the entire star, making it undetectable at some wavelengths. Studying this cloud could reveal magnetic properties of the stellar system. Magnesium found in this shroud supports the blow-off theory where Hydrogen escapes from the planet so quickly other material is blown off with it. Two other Hot Jupiters are known to have planetary enveloping clouds, and others as close are expected to have similar system wide clouds, but not those further away. It has much more methane than water vapor. It may produce shock waves as it plows through its star's stellar wind (the first evidence of shocks around an exoplanet, like Earth and Saturn's bowshocks), possibly produced by a strong planetary magnetic field. This could protect its atmosphere from being stripped away. It could have a diamond core and other terrestrial planets in system would have black spots on them and also be carbon based. One of 5 exoplanets whose water abundance was measured by Hubble in 2013 and found to be less abundant than expected, probably due to a layer of haze or dust blocking detection..
  • OGLE-TR-56 System (4,400 F) - Contains first planet discovered by transit and later confirmed by Dopplar Spectroscopy (rather than the other way around). The first OGLE planet confirmed with the Dopplar method. It is 6000 ly away, 10 times as far as any previous known planet, in a different arm of the galaxy. Also the first Very Hot Jupiter and the first non-inflated Hot Jupiter discovered. It may meet its doom in less than a million years. Planet has one of the first two ground-detected atmospheres. Has an atmosphere hotter than any other measured so far. Unlike other hot Jupiters observed, it is way too hot for clouds of silicon or iron to form which would keep it dark.

See AlsoEdit

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