The HR 8799 System
4 planets
Pegasus
HR 8799 is a planetary system in the constellation Pegasus hosting 4 confirmed exoplanets, about 135 light-years from Earth.
Size Comparison: The Planets of HR 8799
HR 8799: Star and Habitable Zone
HR 8799
- Spectral type
- A5 V
- Mass
- 1.50 M☉
- Luminosity
- 4.9201 L☉
- Age
- 0.1 billion years (Sun: 4.6)
All 4 Planets in the HR 8799 System
Discovery History
The first planet found here, HR 8799 b, was discovered in 2008 using the imaging method. The most recent addition, HR 8799 e, followed in 2010.
Frequently Asked Questions About HR 8799
How many planets does HR 8799 have?
HR 8799 has 4 confirmed exoplanets. More may await discovery.
Are any planets in the HR 8799 system habitable?
None of the known planets in HR 8799 orbit within the star's habitable zone.
How far away is HR 8799?
HR 8799 is about 135 light-years from Earth in the constellation Pegasus.
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