The HD 176986 System
HD 176986 is a planetary system in the constellation Aquila hosting 3 confirmed exoplanets, about 91 light-years from Earth.
HD 176986: Star and Habitable Zone
HD 176986
- Spectral type
- K2.5 V
- Surface temperature
- 4,931 K (Sun: 5,772 K)
- Mass
- 0.79 M☉
- Radius
- 0.78 R☉
- Luminosity
- 0.3310 L☉
- Age
- 4.3 billion years (Sun: 4.6)
Habitable zone of HD 176986: 0.452–1.096 AU (conservative: 0.573–1.039 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 HD 176986 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 176986 b | Super Earth | 6.5 d | — | 0.26 | 2017 |
| HD 176986 c | Super Earth | 17 d | — | 0.26 | 2017 |
| HD 176986 d | Super Earth | 61 d | — | — | 2026 |
Discovery History
The first planet found here, HD 176986 b, was discovered in 2017 using the radial velocity method. The most recent addition, HD 176986 d, followed in 2026.
- 2017 — HD 176986 b (Radial Velocity)
- 2017 — HD 176986 c (Radial Velocity)
- 2026 — HD 176986 d (Radial Velocity)
Frequently Asked Questions About HD 176986
How many planets does HD 176986 have?
HD 176986 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the HD 176986 system habitable?
None of the known planets in HD 176986 orbit within the star's habitable zone.
How far away is HD 176986?
HD 176986 is about 91 light-years from Earth in the constellation Aquila.
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