The HD 28471 System
HD 28471 is a planetary system in the constellation Reticulum hosting 3 confirmed exoplanets, about 142 light-years from Earth.
HD 28471: Star and Habitable Zone
HD 28471
- Spectral type
- G5 V
- Surface temperature
- 5,766 K (Sun: 5,772 K)
- Mass
- 0.98 M☉
- Radius
- 1.08 R☉
- Age
- 6.6 billion years (Sun: 4.6)
Habitable zone of HD 28471: 0.808–1.904 AU (conservative: 1.023–1.805 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 28471 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 28471 b | Super Earth | 3.2 d | — | — | 2025 |
| HD 28471 c | Super Earth | 6.1 d | — | — | 2025 |
| HD 28471 d | Super Earth | 12 d | — | — | 2025 |
Discovery History
The first planet found here, HD 28471 b, was discovered in 2025 using the radial velocity method.
- 2025 — HD 28471 b (Radial Velocity)
- 2025 — HD 28471 c (Radial Velocity)
- 2025 — HD 28471 d (Radial Velocity)
Frequently Asked Questions About HD 28471
How many planets does HD 28471 have?
HD 28471 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the HD 28471 system habitable?
None of the known planets in HD 28471 orbit within the star's habitable zone.
How far away is HD 28471?
HD 28471 is about 142 light-years from Earth in the constellation Reticulum.
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