:INFO
Super-earth around HD 219134
It is 1.51 times Earth's radius, closest in size to Earth, and 4.4 times Earth's mass, at 6.95 g/cm3, denser than Earth. A year there lasts 6.76 days, on an orbit 6 times closer to its star than Mercury is to the Sun. Its equilibrium temperature is 782 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 | 1.51 Earth radii
[icon:CHART] Mass | 4.4 Earth masses
[icon:FIRE] Equilibrium temperature | 782 K (measured)
[icon:CLOCK] One year | 6.76 days
[icon:BOLT] Orbit radius | 0.0653 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 doppler shift measures
A minimum mass, from how fast the star moves toward and away from us.

: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 Roque de los Muchachos Observatory in 2015.

: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.

:LINK
https://exoplanetarchive.ipac.caltech.edu/overview/HD%20219134%20c
NASA Exoplanet Archive: every published measurement of this planet