The HD 73344 System
HD 73344 is a planetary system in the constellation Cancer hosting 3 confirmed exoplanets, about 115 light-years from Earth.
Size Comparison: The Planets of HD 73344
Planets without a measured radius are not shown.
HD 73344: Star and Habitable Zone
HD 73344
- Spectral type
- F6 V
- Surface temperature
- 6,253 K (Sun: 5,772 K)
- Mass
- 1.20 M☉
- Radius
- 1.22 R☉
- Age
- 1.2 billion years (Sun: 4.6)
Habitable zone of HD 73344: 1.042–2.428 AU (conservative: 1.319–2.302 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 73344 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 73344 b | Mini Neptune | 16 d | 2.88 R⊕ | — | 2024 |
| HD 73344 c | Cold Gas Giant | 66 d | — | — | 2025 |
| HD 73344 d | Cold Gas Giant | 5,823 d | — | — | 2025 |
Discovery History
The first planet found here, HD 73344 b, was discovered in 2024 using the transit method. The most recent addition, HD 73344 d, followed in 2025.
- 2024 — HD 73344 b (Transit)
- 2025 — HD 73344 c (Radial Velocity)
- 2025 — HD 73344 d (Radial Velocity)
Frequently Asked Questions About HD 73344
How many planets does HD 73344 have?
HD 73344 has 3 confirmed exoplanets. More may await discovery.
Are any planets in the HD 73344 system habitable?
None of the known planets in HD 73344 orbit within the star's habitable zone.
How far away is HD 73344?
HD 73344 is about 115 light-years from Earth in the constellation Cancer.
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