The K2-73 System
K2-73 is a planetary system in the constellation Aquarius hosting 2 confirmed exoplanets, about 878 light-years from Earth.
Size Comparison: The Planets of K2-73
Planets without a measured radius are not shown.
K2-73: Star and Habitable Zone
K2-73
- Surface temperature
- 5,867 K (Sun: 5,772 K)
- Mass
- 1.02 M☉
- Radius
- 1.06 R☉
Habitable zone of K2-73: 0.814–1.914 AU (conservative: 1.031–1.815 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 2 Planets in the K2-73 System
Discovery History
The first planet found here, K2-73 b, was discovered in 2016 using the transit method. The most recent addition, K2-73 c, followed in 2025.
Frequently Asked Questions About K2-73
How many planets does K2-73 have?
K2-73 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the K2-73 system habitable?
None of the known planets in K2-73 orbit within the star's habitable zone.
How far away is K2-73?
K2-73 is about 878 light-years from Earth in the constellation Aquarius.
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