TOI-1221 b
A confirmed exoplanet orbiting TOI-1221.
Compared with Earth
- Size
- About 2.9 times Earth's width.
- Mass
- About 1,112 times Earth's mass.
- Temperature
- About 167 °C (332 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 6.1 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 92 Earth days.
Planet
- Radius
- 2.91 × Earth
- Mass
- 1,112 × Earth
- Density
- Unknown
- Equilibrium temperature
- 440 K
- Starlight received
- 6.06 × Earth
- Orbital period
- 91.68 days
- Average distance from its star
- 0.387 AU
Star
- Host star
- TOI-1221
- Spectral class
- G — sun-like
- Surface temperature
- 5,592 K
- Radius
- 1.031 × Sun
- Mass
- 0.93 × Sun
- Age
- 10 billion years
System
- Distance from Earth
- 451.4 light-years (138.4 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2023
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.