WASP-192 b
Astrophysical Synthesis & Habitability Characterization
WASP-192 b is a confirmed gas giant exoplanet orbiting the star WASP-192, located approximately 1659.8 light-years (508.89 parsecs) from the Solar System. First announced in 2019 by WASP-South using the Transit detection technique (producing an estimated primary transit depth of 0.9169% across the stellar disk), this world measures 13.787 Earth radii (1.23 Jupiter radii) and has a measured mass of 731.009 Earth masses (2.3 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.54 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 3.85 g⊕ (37.76 m/s²), and an escape velocity of 81.5 km/s.
In its orbital architecture around WASP-192, WASP-192 b completes one full revolution every 2.879 Earth days at a semi-major axis of 0.0408 AU (an ultra-close orbit less than one-seventh of Mercury's 0.387 AU distance from the Sun, where strong stellar tidal forces typically induce synchronous rotation). Its mean orbital velocity is approximately 154.2 km/s (compared to Earth's 29.8 km/s). The orbit is modeled as circular (e = 0.00), maintaining a constant stellar distance throughout its year.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1620 K (+1347°C / +2457°F) and receiving 471.14 S⊕ (~641,224 W/m²), WASP-192 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star WASP-192 is classified as a solar-type yellow star of spectral type G0 V with an effective photospheric temperature of 5,910 K, a radius of 1.32 R☉, a mass of 1.09 M☉, an estimated bolometric luminosity of 1.907 L☉. Stellar evolution modeling indicates an estimated stellar age of 5.7 Gyr and a metallicity of [Fe/H] = 0.14 dex (metal-rich relative to the Sun). From Earth, WASP-192 shines at apparent V-band magnitude 12.678 (faint and requiring research-grade or CCD telescopic photometry) in the Southern 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: WASP-South · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | WASP-192 |
| Spectral Type | G0 V |
| Effective Temp (Teff) | 5,910 K |
| Stellar Radius | 1.3200 R☉ |
| Stellar Mass | 1.0900 M☉ |
| Bolometric Luminosity | 1.907 L☉ |
| Metallicity [Fe/H] | 0.140 dex |
| Stellar Age | 5.700 Gyr |
| Apparent Magnitude | V: 12.678 · G: 12.535 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.040800 AU |
| Orbital Period | 2.879 days |
| Mean Orbital Velocity | 154.2 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 82.7000° |
| Mean Bulk Density | 1.54 g/cm³ (81.5 km/s vesc) |
| Insolation Flux | 471.1420 S⊕ (~641,224 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1659.800 LY (508.885 pc) |