The HD 177830 System
HD 177830 is a planetary system in the constellation Lyra hosting 2 confirmed exoplanets around 2 stars, about 205 light-years from Earth.
Star HD 177830 and Its Habitable Zone
HD 177830
- Surface temperature
- 4,901 K (Sun: 5,772 K)
- Mass
- 1.70 M☉
- Radius
- 3.26 R☉
Habitable zone of HD 177830: 1.846–4.480 AU (conservative: 2.338–4.248 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 177830 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 177830 b | Cold Gas Giant | 410 d | — | 0.27 | 1999 |
| HD 177830 c | Neptune-like | 111 d | — | 0.16 | 2010 |
Discovery History
The first planet found here, HD 177830 b, was discovered in 1999 using the radial velocity method. The most recent addition, HD 177830 c, followed in 2010.
- 1999 — HD 177830 b (Radial Velocity)
- 2010 — HD 177830 c (Radial Velocity)
Frequently Asked Questions About HD 177830
How many planets does HD 177830 have?
HD 177830 has 2 confirmed exoplanets distributed around its 2 stars. More may await discovery.
Are any planets in the HD 177830 system habitable?
None of the known planets in HD 177830 orbit within the star's habitable zone.
How far away is HD 177830?
HD 177830 is about 205 light-years from Earth in the constellation Lyra.
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