HD 20329 b
A confirmed exoplanet orbiting HD 20329.
Compared with Earth
- Size
- About 1.7 times Earth's width.
- Mass
- About 7.4 times Earth's mass.
- Temperature
- About 1,868 °C (3,394 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 3,474 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 22 hours.
Planet
- Radius
- 1.72 × Earth
- Mass
- 7.42 × Earth
- Density
- 8.06 g/cm³
- Equilibrium temperature
- 2,141 K
- Starlight received
- 3,474 × Earth
- Orbital period
- 0.9261 days
- Average distance from its star
- 0.018 AU
Star
- Host star
- HD 20329
- Spectral class
- G — sun-like
- Surface temperature
- 5,596 K
- Radius
- 1.13 × Sun
- Mass
- 0.9 × Sun
- Age
- 11 billion years
System
- Distance from Earth
- 207.7 light-years (63.68 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2022
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.