HD 221287 b
A confirmed exoplanet orbiting HD 221287.
Compared with Earth
- Mass
- About 982 times Earth's mass.
- Year
- A year here lasts about 1.2 Earth years.
Planet
- Radius
- Unknown
- Mass
- 982.1 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 456.1 days
- Average distance from its star
- 1.25 AU
Star
- Host star
- HD 221287
- Spectral class
- F — yellow-white
- Surface temperature
- 6,304 K
- Radius
- Unknown
- Mass
- 1.25 × Sun
- Age
- 1.3 billion years
System
- Distance from Earth
- 182.4 light-years (55.92 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2007
- Method
- Radial Velocity
- Facility
- La Silla Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.