HD 189733 b by Alpha-Element on DeviantArt (original) (raw)

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i recommend downloading to see all detail. also, large file size, sorry if it takes long.

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hot jupiter incoming!

you can find out more here:
en.wikipedia.org/wiki/HD_20945…

so please let your eyes enjoy and leave any comments, favs or critiques, which are always welcome and appreciated!
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HD 189733b

constellation: ................... Vulpecula
distance from earth: .......... 63.4 ly
star's name: ..................... HD 189733 A
star's type: ....................... K1-2V
star's mass: ...................... 0.846 solar masses
star's radius: ..................... 0.781 solar radii
star's luminosity: .............. 0.343 solar luminosities
star's temperature: ........... 4,939 Kelvin
system's name: ................. HD 189733
# stars in system: .............. 2
# planets in system: .......... 1
system's age: ..................... >0.6 billion years

planet's status: ................. confirmed
planet's name: .................. HD 189733b
habitability class: .............. nill
thermal class: .................... nill
earth similarity index: ....... nill

planet's radius: ................ 1.138 jovian radii
planet's mass: .................. 1.162 jovian masses
planet's density: ............... 1.045 g/cc
surface gravity: ................ 2.268 earth gravities
rotation period: ................ tidally locked
average eq. temp: ............. 1,100 Kelvin
# satellites: ....................... unknown

orbital eccentricity: ............ 0.004
orbital distance: ................. 0.0314 au
year: .................................. 2.219 earth days
place in system: ................. next to star

Description

HD 189733b is a hot jupiter type planet orbiting the sub-solar star; HD 189733 A about 63 light years away in the constellation of Vulpecula. It is currently the only planet discovered in the HD 189733 system.

The planet has a mass just over 1.1 times the mass of jupiter which was determined via the radial velocity method, and a radius of roughly 1.1 jovian radii which was determined via the transit method, which is also the method used to determine the planet's existance. From these two measurements, the planet has a density just higher than that of water's and so it may have a composition and internal structure similar to that of jupiter.

By analysing the planet's atmosphere during transit, it was determined that the planet has a large hot spot just east of the sub-stellar point and that the planet glows strongly in the blue region of the spectrum and so has a deep blue in colouration. It was also discovered that similar to HD 209458b, the planet is losing its atmosphere.

The planet orbits its star at a distance of just 3% the earth-sun distance placing it right next to the star in a "roaster" orbit. As such, one year on the planet is only 2.2 days. Due to the proximity of the planet to the star, it is highly likely that the planet does not rotate and so is tidally locked with respect to the star. Despite this, high speed hyper-sonic winds blowing at 7000 km/h still transfer enough heat to the night side of the planet keeping it at a roasting 1000 Kelvin. Due to the high heat and speeding winds, the usually solid materials such as rocks and metals liquefy in the planet's atmosphere and get blown around by the winds. These substances rain through the atmosphere forming liquid glass and metal rains being blasted sideways.

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