The HD 28185 System
HD 28185 is a planetary system in the constellation Eridanus hosting 2 confirmed exoplanets, about 128 light-years from Earth. One of its planets orbits within the habitable zone, where liquid water could exist on a planetary surface.
HD 28185: Star and Habitable Zone
HD 28185
- Surface temperature
- 5,602 K (Sun: 5,772 K)
- Mass
- 0.97 M☉
- Radius
- 1.05 R☉
- Luminosity
- 0.9700 L☉
- Age
- 8.3 billion years (Sun: 4.6)
Habitable zone of HD 28185: 0.747–1.768 AU (conservative: 0.946–1.677 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 28185 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 28185 b HZ | Cold Gas Giant | 386 d | — | 0.40 | 2001 |
| HD 28185 c | Cold Gas Giant | 9,090 d | — | 0.08 | 2022 |
Discovery History
The first planet found here, HD 28185 b, was discovered in 2001 using the radial velocity method. The most recent addition, HD 28185 c, followed in 2022.
- 2001 — HD 28185 b (Radial Velocity)
- 2022 — HD 28185 c (Radial Velocity)
Frequently Asked Questions About HD 28185
How many planets does HD 28185 have?
HD 28185 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the HD 28185 system habitable?
One planet in the system orbits within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.
How far away is HD 28185?
HD 28185 is about 128 light-years from Earth in the constellation Eridanus.
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