The HD 15906 System
HD 15906 is a planetary system in the constellation Cetus hosting 2 confirmed exoplanets, about 149 light-years from Earth.
Size Comparison: The Planets of HD 15906
HD 15906: Star and Habitable Zone
HD 15906
- Spectral type
- K V
- Surface temperature
- 4,757 K (Sun: 5,772 K)
- Mass
- 0.79 M☉
- Radius
- 0.76 R☉
- Luminosity
- 0.2700 L☉
Habitable zone of HD 15906: 0.411–1.005 AU (conservative: 0.521–0.953 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 15906 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 15906 b | Mini Neptune | 11 d | 2.24 R⊕ | 0.28 | 2023 |
| HD 15906 c | Mini Neptune | 22 d | 2.93 R⊕ | 0.30 | 2023 |
Discovery History
The first planet found here, HD 15906 b, was discovered in 2023 using the transit method.
- 2023 — HD 15906 b (Transit)
- 2023 — HD 15906 c (Transit)
Frequently Asked Questions About HD 15906
How many planets does HD 15906 have?
HD 15906 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the HD 15906 system habitable?
None of the known planets in HD 15906 orbit within the star's habitable zone.
How far away is HD 15906?
HD 15906 is about 149 light-years from Earth in the constellation Cetus.
Explore the HD 15906 system in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
