HIP 9618 b
A confirmed exoplanet orbiting HIP 9618.
Compared with Earth
- Size
- About 3.8 times Earth's width.
- Mass
- About 8.3 times Earth's mass.
- Temperature
- About 368 °C (694 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 21 Earth days.
Planet
- Radius
- 3.828 × Earth
- Mass
- 8.3 × Earth
- Density
- 0.81 g/cm³
- Equilibrium temperature
- 640.9 K
- Starlight received
- Unknown
- Orbital period
- 20.77 days
- Average distance from its star
- 0.145 AU
Star
- Host star
- HIP 9618
- Spectral class
- G — sun-like
- Surface temperature
- 5,649 K
- Radius
- 0.9593 × Sun
- Mass
- 0.942 × Sun
- Age
- 5.6 billion years
System
- Distance from Earth
- 220.3 light-years (67.55 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2023
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.