The HD 23472 System
HD 23472 is a planetary system in the constellation Reticulum hosting 5 confirmed exoplanets, about 127 light-years from Earth.
Size Comparison: The Planets of HD 23472
HD 23472: Star and Habitable Zone
HD 23472
- Spectral type
- K4 V
- Surface temperature
- 4,684 K (Sun: 5,772 K)
- Mass
- 0.67 M☉
- Radius
- 0.71 R☉
- Luminosity
- 0.2370 L☉
Habitable zone of HD 23472: 0.387–0.947 AU (conservative: 0.490–0.898 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 5 Planets in the HD 23472 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 23472 b | Super Earth | 18 d | 2.00 R⊕ | 0.33 | 2019 |
| HD 23472 c | Super Earth | 30 d | 1.87 R⊕ | 0.40 | 2019 |
| HD 23472 d | Terrestrial | 4.0 d | 0.75 R⊕ | 0.30 | 2022 |
| HD 23472 e | Terrestrial | 7.9 d | 0.82 R⊕ | 0.32 | 2022 |
| HD 23472 f | Terrestrial | 12 d | 1.14 R⊕ | 0.34 | 2022 |
Discovery History
The first planet found here, HD 23472 b, was discovered in 2019 using the transit method. The most recent addition, HD 23472 f, followed in 2022.
- 2019 — HD 23472 b (Transit)
- 2019 — HD 23472 c (Transit)
- 2022 — HD 23472 d (Transit)
- 2022 — HD 23472 e (Transit)
- 2022 — HD 23472 f (Transit)
Frequently Asked Questions About HD 23472
How many planets does HD 23472 have?
HD 23472 has 5 confirmed exoplanets. More may await discovery.
Are any planets in the HD 23472 system habitable?
None of the known planets in HD 23472 orbit within the star's habitable zone.
How far away is HD 23472?
HD 23472 is about 127 light-years from Earth in the constellation Reticulum.
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