The HIP 5158 System
HIP 5158 is a planetary system in the constellation Cetus hosting 2 confirmed exoplanets, about 168 light-years from Earth. One of its planets orbits within the habitable zone, where liquid water could exist on a planetary surface.
HIP 5158: Star and Habitable Zone
HIP 5158
- Surface temperature
- 4,813 K (Sun: 5,772 K)
- Mass
- 0.78 M☉
- Radius
- 0.75 R☉
- Luminosity
- 0.2749 L☉
Habitable zone of HIP 5158: 0.414–1.009 AU (conservative: 0.525–0.957 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 HIP 5158 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HIP 5158 b HZ | Cold Gas Giant | 346 d | — | 0.21 | 2009 |
| HIP 5158 c | — | 9,018 d | — | 0.08 | 2011 |
Discovery History
The first planet found here, HIP 5158 b, was discovered in 2009 using the radial velocity method. The most recent addition, HIP 5158 c, followed in 2011.
- 2009 — HIP 5158 b (Radial Velocity)
- 2011 — HIP 5158 c (Radial Velocity)
Frequently Asked Questions About HIP 5158
How many planets does HIP 5158 have?
HIP 5158 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the HIP 5158 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 HIP 5158?
HIP 5158 is about 168 light-years from Earth in the constellation Cetus.
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