LTT 3780 b
A confirmed exoplanet orbiting LTT 3780.
Compared with Earth
- Size
- About 1.3 times Earth's width.
- Mass
- About 2.5 times Earth's mass.
- Temperature
- About 630 °C (1,166 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 111 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 18 hours.
Planet
- Radius
- 1.325 × Earth
- Mass
- 2.46 × Earth
- Density
- 5.8 g/cm³
- Equilibrium temperature
- 903 K
- Starlight received
- 111 × Earth
- Orbital period
- 0.7684 days
- Average distance from its star
- 0.01195 AU
Star
- Host star
- LTT 3780
- Spectral class
- M — red dwarf
- Surface temperature
- 3,358 K
- Radius
- 0.38 × Sun
- Mass
- 0.381 × Sun
- Age
- 3.1 billion years
System
- Distance from Earth
- 71.69 light-years (21.98 parsecs)
- Stars in system
- 2
- Known planets
- 2
Discovery
- Year
- 2020
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.