TOI-858 B b
A confirmed exoplanet orbiting TOI-858 B.
Compared with Earth
- Size
- About 14 times Earth's width.
- Mass
- About 350 times Earth's mass.
- Temperature
- About 1,256 °C (2,293 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 909 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 3.3 Earth days.
Planet
- Radius
- 14.07 × Earth
- Mass
- 349.6 × Earth
- Density
- 0.69 g/cm³
- Equilibrium temperature
- 1,529 K
- Starlight received
- 908.9 × Earth
- Orbital period
- 3.28 days
- Average distance from its star
- 0.04435 AU
Star
- Host star
- TOI-858 B
- Spectral class
- G — sun-like
- Surface temperature
- 5,842 K
- Radius
- 1.308 × Sun
- Mass
- 1.081 × Sun
- Age
- 6.8 billion years
System
- Distance from Earth
- 817 light-years (250.5 parsecs)
- Stars in system
- 2
- Known planets
- 1
Discovery
- Year
- 2023
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.