tau Boo b
A confirmed exoplanet orbiting tau Boo.
Compared with Earth
- Mass
- About 1,373 times Earth's mass.
- Year
- A year here lasts about 3.3 Earth days.
Planet
- Radius
- Unknown
- Mass
- 1,373 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 3.312 days
- Average distance from its star
- 0.049 AU
Star
- Host star
- tau Boo
- Spectral class
- F — yellow-white
- Surface temperature
- 6,466 K
- Radius
- 1.426 × Sun
- Mass
- 1.32 × Sun
- Age
- Unknown
System
- Distance from Earth
- 51.05 light-years (15.65 parsecs)
- Stars in system
- 2
- Known planets
- 1
Discovery
- Year
- 1996
- Method
- Radial Velocity
- Facility
- Lick Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.