WASP-114 b
Astrophysical Synthesis & Habitability Characterization
WASP-114 b is a confirmed gas giant exoplanet orbiting the star WASP-114, located approximately 1706.9 light-years (523.34 parsecs) from the Solar System. First announced in 2016 by SuperWASP-North using the Transit detection technique (producing an estimated primary transit depth of 0.9259% across the stellar disk), this world measures 15.009 Earth radii (1.34 Jupiter radii) and has a measured mass of 562.241 Earth masses (1.77 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.92 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.5 g⊕ (24.52 m/s²), and an escape velocity of 68.5 km/s.
In its orbital architecture around WASP-114, WASP-114 b completes one full revolution every 1.549 Earth days at a semi-major axis of 0.02851 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 200.3 km/s (compared to Earth's 29.8 km/s). With a near-circular eccentricity of e = 0.012 (ranging from 0.0282 AU at periapsis to 0.0289 AU at apoapsis), the planet experiences minimal orbital distance variation.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 2043 K (+1770°C / +3218°F) and receiving 2,978.20 S⊕ (~4,053,337 W/m²), WASP-114 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star WASP-114 is classified as a solar-type yellow star of spectral type G0 with an effective photospheric temperature of 5,940 K, a radius of 1.43 R☉, a mass of 1.289 M☉, an estimated bolometric luminosity of 2.284 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.3 Gyr and a metallicity of [Fe/H] = 0.14 dex (metal-rich relative to the Sun). From Earth, WASP-114 shines at apparent V-band magnitude 12.685 (faint and requiring research-grade or CCD telescopic photometry) 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: SuperWASP-North · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | WASP-114 |
| Spectral Type | G0 |
| Effective Temp (Teff) | 5,940 K |
| Stellar Radius | 1.4300 R☉ |
| Stellar Mass | 1.2890 M☉ |
| Bolometric Luminosity | 2.284 L☉ |
| Metallicity [Fe/H] | 0.140 dex |
| Stellar Age | 4.300 Gyr |
| Apparent Magnitude | V: 12.685 · G: 12.523 |
| System Architecture | 2 Stars, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.028510 AU |
| Orbital Period | 1.549 days |
| Mean Orbital Velocity | 200.3 km/s |
| Orbital Eccentricity (e) | 0.01200 |
| Orbital Inclination (i) | 83.9600° |
| Mean Bulk Density | 0.92 g/cm³ (68.5 km/s vesc) |
| Insolation Flux | 2978.2048 S⊕ (~4,053,337 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1706.900 LY (523.337 pc) |