TOI-1243 b
A confirmed exoplanet orbiting TOI-1243.
Compared with Earth
- Size
- About 2.3 times Earth's width.
- Mass
- About 7.7 times Earth's mass.
- Temperature
- About 177 °C (350 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 4.7 Earth days.
Planet
- Radius
- 2.33 × Earth
- Mass
- 7.7 × Earth
- Density
- 3.3 g/cm³
- Equilibrium temperature
- 450 K
- Starlight received
- Unknown
- Orbital period
- 4.659 days
- Average distance from its star
- Unknown
Star
- Host star
- TOI-1243
- Spectral class
- M — red dwarf
- Surface temperature
- 3,515 K
- Radius
- 0.511 × Sun
- Mass
- 0.515 × Sun
- Age
- Unknown
System
- Distance from Earth
- 140.9 light-years (43.19 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.