:INFO
Gas giant around GJ 414 A
It is 0.75 times Jupiter's radius, closest in size to Saturn, and 53.8 times Earth's mass. A year there lasts 749.83 days, on an orbit 3.6 times Mercury's distance from the Sun. Its equilibrium temperature is 125 K, colder than anywhere on Earth. The host star GJ 414 A runs at 4120 K with 0.65 times the Sun's mass.

:STATS
[icon:TARGET] Radius | 8.40 Earth radii
[icon:CHART] Mass | 53.8 Earth masses
[icon:FIRE] Equilibrium temperature | 125 K (measured)
[icon:CLOCK] One year | 749.83 days
[icon:BOLT] Orbit radius | 1.4000 AU
[icon:STAR] Host star | GJ 414 A at 4120 K
[icon:USERS] Distance | 39 light-years

:CHECKLIST
What is established here and what is missing
[ ] Within the zone where liquid water could persist. No.
[ ] A measured mass, not just a radius. Yes.
[ ] A measured temperature rather than one derived from the star. Yes.
[ ] Any detection of an atmosphere. Not recorded in the archive.

:PATH
What the doppler shift measures
A minimum mass, from how fast the star moves toward and away from us.

:NOTE
Found by W. M. Keck Observatory in 2021.

:NOTE
GJ 414 A has 2 known planets. Multi-planet systems are where orbital dynamics can be measured rather than assumed.

:NOTE
This planet was found by the wobble it induces in its star, which measures mass rather than size. A radius quoted for such a planet usually comes from a later transit or from a model.

:LINK
https://exoplanetarchive.ipac.caltech.edu/overview/GJ%20414%20A%20c
NASA Exoplanet Archive: every published measurement of this planet