TOI-603 b
A confirmed exoplanet orbiting TOI-603.
Compared with Earth
- Size
- About 7.4 times Earth's width.
- Mass
- About 33 times Earth's mass.
- Temperature
- About 626 °C (1,159 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 157 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 16 Earth days.
Planet
- Radius
- 7.37 × Earth
- Mass
- 33 × Earth
- Density
- 0.453 g/cm³
- Equilibrium temperature
- 899 K
- Starlight received
- 157 × Earth
- Orbital period
- 16.18 days
- Average distance from its star
- 0.1282 AU
Star
- Host star
- TOI-603
- Spectral class
- F — yellow-white
- Surface temperature
- 6,027 K
- Radius
- 1.477 × Sun
- Mass
- 1.24 × Sun
- Age
- Unknown
System
- Distance from Earth
- 671.6 light-years (205.9 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2026
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.