HD 18438 b
A confirmed exoplanet orbiting HD 18438.
Compared with Earth
- Mass
- About 6,674 times Earth's mass.
- Year
- A year here lasts about 2.2 Earth years.
Planet
- Radius
- Unknown
- Mass
- 6,674 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 803 days
- Average distance from its star
- 2.1 AU
Star
- Host star
- HD 18438
- Spectral class
- M — red dwarf
- Surface temperature
- 3,860 K
- Radius
- 88.48 × Sun
- Mass
- 1.84 × Sun
- Age
- 5.5 billion years
System
- Distance from Earth
- 731.1 light-years (224.1 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2023
- Method
- Radial Velocity
- Facility
- Bohyunsan Optical Astronomical Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.