The HD 63433 System
HD 63433 is a planetary system in the constellation Gemini hosting 3 confirmed exoplanets, about 73 light-years from Earth.
Size Comparison: The Planets of HD 63433
HD 63433: Star and Habitable Zone
HD 63433
- Spectral type
- G5 V
- Surface temperature
- 5,553 K (Sun: 5,772 K)
- Mass
- 0.96 M☉
- Radius
- 0.93 R☉
- Luminosity
- 0.7480 L☉
- Age
- 0.4 billion years (Sun: 4.6)
Habitable zone of HD 63433: 0.658–1.560 AU (conservative: 0.833–1.479 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 63433 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 63433 b | Super Earth | 7.1 d | 2.14 R⊕ | 0.26 | 2020 |
| HD 63433 c | Super Earth | 21 d | 2.69 R⊕ | 0.26 | 2020 |
| HD 63433 d | Terrestrial | 4.2 d | 1.07 R⊕ | 0.30 | 2023 |
Discovery History
The first planet found here, HD 63433 b, was discovered in 2020 using the transit method. The most recent addition, HD 63433 d, followed in 2023.
- 2020 — HD 63433 b (Transit)
- 2020 — HD 63433 c (Transit)
- 2023 — HD 63433 d (Transit)
Frequently Asked Questions About HD 63433
How many planets does HD 63433 have?
HD 63433 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the HD 63433 system habitable?
None of the known planets in HD 63433 orbit within the star's habitable zone.
How far away is HD 63433?
HD 63433 is about 73 light-years from Earth in the constellation Gemini.
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