The GJ 9827 System
GJ 9827 is a planetary system in the constellation Pisces hosting 3 confirmed exoplanets, about 97 light-years from Earth.
Size Comparison: The Planets of GJ 9827
GJ 9827: Star and Habitable Zone
GJ 9827
- Spectral type
- K7 V
- Surface temperature
- 4,236 K (Sun: 5,772 K)
- Mass
- 0.62 M☉
- Radius
- 0.58 R☉
- Age
- 5.5 billion years (Sun: 4.6)
Habitable zone of GJ 9827: 0.251–0.629 AU (conservative: 0.318–0.596 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 GJ 9827 System
Discovery History
The first planet found here, GJ 9827 b, was discovered in 2017 using the transit method.
Frequently Asked Questions About GJ 9827
How many planets does GJ 9827 have?
GJ 9827 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the GJ 9827 system habitable?
None of the known planets in GJ 9827 orbit within the star's habitable zone.
How far away is GJ 9827?
GJ 9827 is about 97 light-years from Earth in the constellation Pisces.
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