TOI-3984 A b
A confirmed exoplanet orbiting TOI-3984 A.
Compared with Earth
- Size
- About 7.9 times Earth's width.
- Mass
- About 44 times Earth's mass.
- Temperature
- About 290 °C (554 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 17 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 4.4 Earth days.
Planet
- Radius
- 7.9 × Earth
- Mass
- 44 × Earth
- Density
- 0.49 g/cm³
- Equilibrium temperature
- 563 K
- Starlight received
- 16.7 × Earth
- Orbital period
- 4.353 days
- Average distance from its star
- 0.041 AU
Star
- Host star
- TOI-3984 A
- Spectral class
- M — red dwarf
- Surface temperature
- 3,476 K
- Radius
- 0.47 × Sun
- Mass
- 0.49 × Sun
- Age
- 2.9 billion years
System
- Distance from Earth
- 355.1 light-years (108.9 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.