HD 101581 b
A confirmed exoplanet orbiting HIP 56998.
Compared with Earth
- Size
- About 96% of Earth's width.
- Temperature
- About 561 °C (1,042 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 80 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 4.5 Earth days.
Planet
- Radius
- 0.956 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 834 K
- Starlight received
- 80 × Earth
- Orbital period
- 4.466 days
- Average distance from its star
- 0.046 AU
Star
- Host star
- HIP 56998
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,675 K
- Radius
- 0.63 × Sun
- Mass
- 0.653 × Sun
- Age
- 6.88 billion years
System
- Distance from Earth
- 41.68 light-years (12.78 parsecs)
- Stars in system
- 1
- Known planets
- 2
Discovery
- Year
- 2025
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.