The HD 202206 System
HD 202206 is a planetary system in the constellation Capricornus hosting 2 confirmed exoplanets, about 150 light-years from Earth. One of its planets orbits within the habitable zone, where liquid water could exist on a planetary surface.
HD 202206: Star and Habitable Zone
HD 202206
- Spectral type
- G2 V
- Surface temperature
- 5,764 K (Sun: 5,772 K)
- Mass
- 1.06 M☉
- Radius
- 1.04 R☉
- Luminosity
- 1.0900 L☉
- Age
- 3.9 billion years (Sun: 4.6)
Habitable zone of HD 202206: 0.784–1.848 AU (conservative: 0.993–1.752 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 HD 202206 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 202206 b HZ | — | 256 d | — | — | 2026 |
| HD 202206 c | Cold Gas Giant | 1,299 d | — | 0.23 | 2004 |
Discovery History
The first planet found here, HD 202206 c, was discovered in 2004 using the radial velocity method. The most recent addition, HD 202206 b, followed in 2026.
- 2004 — HD 202206 c (Radial Velocity)
- 2026 — HD 202206 b (Radial Velocity)
Frequently Asked Questions About HD 202206
How many planets does HD 202206 have?
HD 202206 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the HD 202206 system habitable?
One planet in the system orbits within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.
How far away is HD 202206?
HD 202206 is about 150 light-years from Earth in the constellation Capricornus.
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