:INFO
Gas giant around CT Cha
It is 2.20 times Jupiter's radius, closest in size to Jupiter, and 5403.0 times Earth's mass. Its equilibrium temperature is 2600 K, hotter than the surface of many stars.

:STATS
[icon:TARGET] Radius | 24.66 Earth radii
[icon:CHART] Mass | 5403.0 Earth masses
[icon:FIRE] Equilibrium temperature | 2600 K (measured)
[icon:BOLT] Orbit radius | 440.0000 AU
[icon:USERS] Distance | 622 light-years

:COUNTER
2600 K: hot enough to vaporise rock on the dayside

:CHECKLIST
Known and unknown, as the archive has it
[ ] A radius from transit photometry. Yes.
[ ] A mass. Yes.
[ ] A density, so rock and gas can be told apart. No.
[ ] An orbital distance. Yes.
[ ] An observed temperature. Yes.
[ ] An eccentricity, so the orbit shape is known. No.

:PATH
What the picture gives
A position, a brightness, and light that can be split into a spectrum.

:NOTE
Found by Paranal Observatory in 2007.

:NOTE
This is one of the rare planets that has actually been photographed. Fewer than a hundred of the thousands known were found this way, and they are mostly young giants far from their stars.

:THREAD

:LINK
https://exoplanetarchive.ipac.caltech.edu/overview/CT%20Cha%20b
NASA Exoplanet Archive: the full record for CT Cha b