HD 1666 b

A confirmed exoplanet orbiting HD 1666.

Compared with Earth

Mass
About 2,040 times Earth's mass.
Year
A year here lasts about 270 Earth days.

Planet

Radius
Unknown
Mass
2,040 × Earth
Density
Unknown
Equilibrium temperature
Unknown
Starlight received
Unknown
Orbital period
270 days
Average distance from its star
0.94 AU

Star

Host star
HD 1666
Spectral class
F — yellow-white
Surface temperature
6,317 K
Radius
1.93 × Sun
Mass
1.5 × Sun
Age
1.76 billion years

System

Distance from Earth
384.6 light-years (117.9 parsecs)
Stars in system
1
Known planets
1

Discovery

Year
2015
Method
Radial Velocity
Facility
Multiple Observatories

Data from the NASA Exoplanet Archive, synced October 14, 2026.