HD 219134 d
A confirmed exoplanet orbiting HD 219134.
Compared with Earth
- Size
- About 1.6 times Earth's width.
- Mass
- About 16 times Earth's mass.
- Temperature
- About 137 °C (279 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 4.7 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 47 Earth days.
Planet
- Radius
- 1.61 × Earth
- Mass
- 16.17 × Earth
- Density
- Unknown
- Equilibrium temperature
- 410.5 K
- Starlight received
- 4.72 × Earth
- Orbital period
- 46.86 days
- Average distance from its star
- 0.237 AU
Star
- Host star
- HD 219134
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,699 K
- Radius
- 0.778 × Sun
- Mass
- 0.81 × Sun
- Age
- 11 billion years
System
- Distance from Earth
- 21.3 light-years (6.531 parsecs)
- Stars in system
- 1
- Known planets
- 6
Discovery
- Year
- 2015
- Method
- Radial Velocity
- Facility
- Roque de los Muchachos Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.