The HIP 56998 System
HIP 56998 is a planetary system in the constellation Centaurus hosting 2 confirmed exoplanets, about 42 light-years from Earth.
Size Comparison: The Planets of HIP 56998
HIP 56998: Star and Habitable Zone
HIP 56998
- Surface temperature
- 4,675 K (Sun: 5,772 K)
- Mass
- 0.65 M☉
- Radius
- 0.63 R☉
- Age
- 6.9 billion years (Sun: 4.6)
Habitable zone of HIP 56998: 0.328–0.803 AU (conservative: 0.415–0.761 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 56998 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 101581 b | Terrestrial | 4.5 d | 0.96 R⊕ | — | 2025 |
| HD 101581 c | Terrestrial | 6.2 d | 0.99 R⊕ | — | 2025 |
Discovery History
The first planet found here, HD 101581 b, was discovered in 2025 using the transit method.
- 2025 — HD 101581 b (Transit)
- 2025 — HD 101581 c (Transit)
Frequently Asked Questions About HIP 56998
How many planets does HIP 56998 have?
HIP 56998 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the HIP 56998 system habitable?
None of the known planets in HIP 56998 orbit within the star's habitable zone.
How far away is HIP 56998?
HIP 56998 is about 42 light-years from Earth in the constellation Centaurus.
Explore the HIP 56998 system in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
