HD 24064 b
Astrophysical Synthesis & Habitability Characterization
HD 24064 b is a confirmed gas giant exoplanet orbiting the star HD 24064, located approximately 979.3 light-years (300.25 parsecs) from the Solar System. First announced in 2015 by Bohyunsan Optical Astronomical Observatory using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 12.3 Earth radii (1.1 Jupiter radii) and has a measured mass of 4096.829 Earth masses (12.89 Jupiter masses). Combining its mass and radius yields a mean bulk density of 12.14 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 27.08 g⊕ (265.56 m/s²), and an escape velocity of 204.1 km/s.
In its orbital architecture around HD 24064, HD 24064 b completes one full revolution every 535.6 Earth days (1.47Julian years) at a semi-major axis of 1.29 AU (comparable to the inner terrestrial zone between Venus, Earth at 1.00 AU, and Mars at 1.52 AU). Its mean orbital velocity is approximately 26.2 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.35, swinging from 0.8385 AU at periapsis out to 1.7415 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1088 K (+815°C / +1499°F) and receiving 211.40 S⊕ (~287,715 W/m²), HD 24064 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star HD 24064 is classified as an orange K-type star of spectral type K0 with an effective photospheric temperature of 4,052 K, a radius of 40 R☉, a mass of 1.61 M☉, an estimated bolometric luminosity of 386.979 L☉. Stellar evolution modeling indicates an estimated stellar age of 9 Gyr and a metallicity of [Fe/H] = -0.49 dex (metal-poor relative to the Sun). From Earth, HD 24064 shines at apparent V-band magnitude 6.746 (accessible to binoculars and small amateur telescopes) in the Northern celestial hemisphere.
Methodology: Computed using the Schulze-Makuch et al. (2011) weighted metric comparing physical interior (radius, estimated density) and surface thermal regime (escape velocity, equilibrium temperature).
Discovery Facility: Bohyunsan Optical Astronomical Observatory · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | HD 24064 |
| Spectral Type | K0 |
| Effective Temp (Teff) | 4,052 K |
| Stellar Radius | 40.0000 R☉ |
| Stellar Mass | 1.6100 M☉ |
| Bolometric Luminosity | 386.979 L☉ |
| Metallicity [Fe/H] | -0.490 dex |
| Stellar Age | 9.000 Gyr |
| Apparent Magnitude | V: 6.746 · G: 6.178 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 1.290000 AU |
| Orbital Period | 535.6 days |
| Mean Orbital Velocity | 26.2 km/s |
| Orbital Eccentricity (e) | 0.35000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 12.14 g/cm³ (204.1 km/s vesc) |
| Insolation Flux | 211.3995 S⊕ (~287,715 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 979.300 LY (300.247 pc) |