The HAT-P-17 System
HAT-P-17 is a planetary system in the constellation Cygnus hosting 2 confirmed exoplanets, about 301 light-years from Earth.
Size Comparison: The Planets of HAT-P-17
Planets without a measured radius are not shown.
HAT-P-17: Star and Habitable Zone
HAT-P-17
- Surface temperature
- 5,246 K (Sun: 5,772 K)
- Mass
- 0.99 M☉
- Radius
- 0.87 R☉
Habitable zone of HAT-P-17: 0.555–1.329 AU (conservative: 0.703–1.260 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 HAT-P-17 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HAT-P-17 b | Cold Gas Giant | 10 d | 11.77 R⊕ | 0.09 | 2012 |
| HAT-P-17 c | Cold Gas Giant | 5,584 d | — | 0.09 | 2012 |
Discovery History
The first planet found here, HAT-P-17 b, was discovered in 2012 using the transit method.
- 2012 — HAT-P-17 b (Transit)
- 2012 — HAT-P-17 c (Radial Velocity)
Frequently Asked Questions About HAT-P-17
How many planets does HAT-P-17 have?
HAT-P-17 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the HAT-P-17 system habitable?
None of the known planets in HAT-P-17 orbit within the star's habitable zone.
How far away is HAT-P-17?
HAT-P-17 is about 301 light-years from Earth in the constellation Cygnus.
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