The HD 33142 System
HD 33142 is a planetary system in the constellation Lepus hosting 3 confirmed exoplanets, about 396 light-years from Earth.
HD 33142: Star and Habitable Zone
HD 33142
- Spectral type
- K0 III
- Surface temperature
- 5,025 K (Sun: 5,772 K)
- Mass
- 1.52 M☉
- Radius
- 4.17 R☉
- Luminosity
- 10.0099 L☉
- Age
- 2.7 billion years (Sun: 4.6)
Habitable zone of HD 33142: 2.475–5.978 AU (conservative: 3.135–5.668 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 33142 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 33142 b | Cold Gas Giant | 330 d | — | 0.17 | 2011 |
| HD 33142 c | Cold Gas Giant | 810 d | — | 0.31 | 2016 |
| HD 33142 d | Cold Gas Giant | 90 d | — | 0.11 | 2022 |
Discovery History
The first planet found here, HD 33142 b, was discovered in 2011 using the radial velocity method. The most recent addition, HD 33142 d, followed in 2022.
- 2011 — HD 33142 b (Radial Velocity)
- 2016 — HD 33142 c (Radial Velocity)
- 2022 — HD 33142 d (Radial Velocity)
Frequently Asked Questions About HD 33142
How many planets does HD 33142 have?
HD 33142 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the HD 33142 system habitable?
None of the known planets in HD 33142 orbit within the star's habitable zone.
How far away is HD 33142?
HD 33142 is about 396 light-years from Earth in the constellation Lepus.
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