SPECULOOS-3 b
A confirmed exoplanet orbiting SPECULOOS-3.
Compared with Earth
- Size
- About 98% of Earth's width.
- Temperature
- About 280 °C (536 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 16 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 17 hours.
Planet
- Radius
- 0.977 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 553 K
- Starlight received
- 15.54 × Earth
- Orbital period
- 0.7191 days
- Average distance from its star
- 0.00733 AU
Star
- Host star
- SPECULOOS-3
- Spectral class
- M — red dwarf
- Surface temperature
- 2,800 K
- Radius
- 0.123 × Sun
- Mass
- 0.1009 × Sun
- Age
- 6.6 billion years
System
- Distance from Earth
- Unknown
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2024
- Method
- Transit
- Facility
- SPECULOOS Southern Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.