The HIP 41378 System
HIP 41378 is a planetary system in the constellation Cancer hosting 6 confirmed exoplanets, about 347 light-years from Earth.
Size Comparison: The Planets of HIP 41378
Planets without a measured radius are not shown.
HIP 41378: Star and Habitable Zone
HIP 41378
- Surface temperature
- 6,371 K (Sun: 5,772 K)
- Mass
- 1.25 M☉
- Radius
- 1.31 R☉
- Age
- 1.8 billion years (Sun: 4.6)
Habitable zone of HIP 41378: 1.150–2.674 AU (conservative: 1.456–2.535 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 6 Planets in the HIP 41378 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HIP 41378 b | Super Earth | 16 d | 2.42 R⊕ | 0.24 | 2016 |
| HIP 41378 c | Mini Neptune | 32 d | 2.51 R⊕ | 0.25 | 2016 |
| HIP 41378 d | Puffy Planet | 278 d | 3.54 R⊕ | 0.52 | 2016 |
| HIP 41378 e | Neptune-like | 369 d | 4.92 R⊕ | 0.25 | 2016 |
| HIP 41378 f | — | 542 d | — | 0.38 | 2016 |
| HIP 41378 g | Super Earth | 64 d | — | — | 2025 |
Discovery History
The first planet found here, HIP 41378 b, was discovered in 2016 using the transit method. The most recent addition, HIP 41378 g, followed in 2025.
- 2016 — HIP 41378 b (Transit)
- 2016 — HIP 41378 c (Transit)
- 2016 — HIP 41378 d (Transit)
- 2016 — HIP 41378 e (Transit)
- 2016 — HIP 41378 f (Transit)
- 2025 — HIP 41378 g (Radial Velocity)
Frequently Asked Questions About HIP 41378
How many planets does HIP 41378 have?
HIP 41378 has 6 confirmed exoplanets. More may await discovery.
Are any planets in the HIP 41378 system habitable?
None of the known planets in HIP 41378 orbit within the star's habitable zone.
How far away is HIP 41378?
HIP 41378 is about 347 light-years from Earth in the constellation Cancer.
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