:INFO
Ice giant around GJ 436
It is 4.17 times Earth's radius, closest in size to Uranus, and 22.1 times Earth's mass, at 1.80 g/cm3, less dense than Earth. A year there lasts 2.64 days, on an orbit 13 times closer to its star than Mercury is to the Sun.

:STATS
[icon:TARGET] Radius | 4.17 Earth radii
[icon:CHART] Mass | 22.1 Earth masses
[icon:CLOCK] One year | 2.64 days
[icon:BOLT] Orbit radius | 0.0291 AU
[icon:USERS] Distance | 32 light-years

:PATH
What the star's motion reveals
The pull of the planet on its star, which is a lower bound on its mass.

: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.

:NOTE
Found by W. M. Keck Observatory in 2004.

:LINK
https://exoplanetarchive.ipac.caltech.edu/overview/GJ%20436%20b
Every parameter ever published for GJ 436 b, at the NASA Exoplanet Archive