:INFO
Super-earth around HD 219134
It is 1.60 times Earth's radius, closest in size to Earth, and 4.7 times Earth's mass, at 6.34 g/cm3, denser than Earth. A year there lasts 3.09 days, on an orbit 10 times closer to its star than Mercury is to the Sun. Its equilibrium temperature is 1015 K, hot enough to melt lead. The host star HD 219134 runs at 4699 K with 0.81 times the Sun's mass.

:JOURNEY
HD 219134 from the inside out
1 0.039 AU
2 0.065 AU
3 0.146 AU
4 0.237 AU

:STATS
[icon:TARGET] Radius | 1.60 Earth radii
[icon:CHART] Mass | 4.7 Earth masses
[icon:FIRE] Equilibrium temperature | 1015 K (measured)
[icon:CLOCK] One year | 3.09 days
[icon:BOLT] Orbit radius | 0.0388 AU
[icon:STAR] Host star | HD 219134 at 4699 K
[icon:USERS] Distance | 21 light-years

:COUNTER
21.3 light-years: close enough to be a follow-up target

:PATH
What the star's motion reveals
How hard the planet tugs, which sets a floor on how heavy it is.

: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
HD 219134 has 6 known planets. Planets in company tug on each other, and those tugs are measurable, which is how masses get pinned down without a wobble.

:NOTE
Found by Roque de los Muchachos Observatory in 2015.

:LINK
https://exoplanetarchive.ipac.caltech.edu/overview/HD%20219134%20b
Every parameter ever published for HD 219134 b, at the NASA Exoplanet Archive