The YZ Cet System
YZ Cet is a planetary system in the constellation Cetus hosting 3 confirmed exoplanets, about 12 light-years from Earth.
YZ Cet: Star and Habitable Zone
YZ Cet
- Spectral type
- M4.5 V
- Surface temperature
- 3,151 K (Sun: 5,772 K)
- Mass
- 0.14 M☉
- Radius
- 0.16 R☉
- Luminosity
- 0.0022 L☉
- Age
- 3.8 billion years (Sun: 4.6)
Habitable zone of YZ Cet: 0.038–0.102 AU (conservative: 0.049–0.096 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 YZ Cet System
Discovery History
The first planet found here, YZ Cet b, was discovered in 2017 using the radial velocity method.
Frequently Asked Questions About YZ Cet
How many planets does YZ Cet have?
YZ Cet has 3 confirmed exoplanets. More may await discovery.
Are any planets in the YZ Cet system habitable?
None of the known planets in YZ Cet orbit within the star's habitable zone.
How far away is YZ Cet?
YZ Cet is about 12 light-years from Earth in the constellation Cetus.
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