The HR 858 System
HR 858 is a planetary system in the constellation Fornax hosting 3 confirmed exoplanets around 2 stars, about 104 light-years from Earth.
Size Comparison: The Planets of HR 858
Star HR 858 and Its Habitable Zone
HR 858
- Surface temperature
- 6,354 K (Sun: 5,772 K)
- Mass
- 1.20 M☉
- Radius
- 1.26 R☉
- Luminosity
- 2.3100 L☉
- Age
- 2.0 billion years (Sun: 4.6)
Habitable zone of HR 858: 1.101–2.563 AU (conservative: 1.395–2.430 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
All 3 Planets in the HR 858 System
Discovery History
The first planet found here, HR 858 b, was discovered in 2019 using the transit method.
Frequently Asked Questions About HR 858
How many planets does HR 858 have?
HR 858 has 3 confirmed exoplanets distributed around its 2 stars. More may await discovery.
Are any planets in the HR 858 system habitable?
None of the known planets in HR 858 orbit within the star's habitable zone.
How far away is HR 858?
HR 858 is about 104 light-years from Earth in the constellation Fornax.
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