HD 132563 b
Astrophysical Synthesis & Habitability Characterization
HD 132563 b is a confirmed gas giant exoplanet orbiting the star HD 132563, located approximately 343 light-years (105.16 parsecs) from the Solar System. First announced in 2011 by Roque de los Muchachos Observatory using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 13.6 Earth radii (1.21 Jupiter radii) and has a measured mass of 473.547 Earth masses (1.49 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.04 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.56 g⊕ (25.11 m/s²), and an escape velocity of 66 km/s.
In its orbital architecture around HD 132563, HD 132563 b completes one full revolution every 1544 Earth days (4.23Julian years) at a semi-major axis of 2.62 AU (corresponding to the middle-system regime between Mars at 1.52 AU and Jupiter at 5.20 AU). Its mean orbital velocity is approximately 18.5 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.22 carries the world between 2.0436 AU at periapsis and 3.1964 AU at apoapsis, driving measurable seasonal insolation cycles.
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 13.600 R⊕, HD 132563 b exceeds the empirical ~1.8–2.2 R⊕ Fulton radius valley threshold, indicating a substantial hydrogen-helium or supercritical volatile envelope without a conventional solid terrestrial surface.
The host star HD 132563 is classified as a warm F-type star of spectral type F8 with an effective photospheric temperature of 6,289 K, a radius of 1.2958 R☉, a mass of 1.231 M☉, an estimated bolometric luminosity of 2.357 L☉. Stellar evolution modeling indicates an estimated stellar age of 2.31 Gyr and a metallicity of [Fe/H] = -0.06 dex (near-solar heavy-element abundance). From Earth, HD 132563 shines at apparent V-band magnitude 8.928 (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: Roque de los Muchachos Observatory · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | HD 132563 |
| Spectral Type | F8 |
| Effective Temp (Teff) | 6,289 K |
| Stellar Radius | 1.2958 R☉ |
| Stellar Mass | 1.2310 M☉ |
| Bolometric Luminosity | 2.357 L☉ |
| Metallicity [Fe/H] | -0.060 dex |
| Stellar Age | 2.310 Gyr |
| Apparent Magnitude | V: 8.928 · G: 8.858 |
| System Architecture | 3 Stars, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 2.620000 AU |
| Orbital Period | 1544 days |
| Mean Orbital Velocity | 18.5 km/s |
| Orbital Eccentricity (e) | 0.22000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 1.04 g/cm³ (66 km/s vesc) |
| Insolation Flux | 0.3447 S⊕ (~469 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 343.000 LY (105.155 pc) |