:INFO
Super-earth around HD 219134
It is 1.31 times Earth's radius, closest in size to Earth, and 7.3 times Earth's mass. A year there lasts 22.72 days, on an orbit 3 times closer to its star than Mercury is to the Sun. Its equilibrium temperature is 523 K, hotter than any desert. 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 | 1.31 Earth radii
[icon:CHART] Mass | 7.3 Earth masses
[icon:FIRE] Equilibrium temperature | 523 K (measured)
[icon:CLOCK] One year | 22.72 days
[icon:BOLT] Orbit radius | 0.1463 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

:CHECKLIST
What the archive holds on this planet
[ ] A measured radius. Yes.
[ ] A measured mass. Yes.
[ ] A density, the one clue to composition. No.
[ ] A semi-major axis. Yes.
[ ] An observed temperature. Yes.
[ ] An eccentricity, so the orbit shape is known. Yes.

:PATH
What the wobble gives
A minimum mass, from how fast the star moves toward and away from us.

:NOTE
HD 219134 has 6 known planets. Systems like this are the ones where architecture can be studied instead of guessed at.

: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/HD%20219134%20f
NASA Exoplanet Archive: every published measurement of this planet