TOI-6330 b
Astrophysical Synthesis & Habitability Characterization
TOI-6330 b is a confirmed gas giant exoplanet orbiting the star TOI-6330, located approximately 453.5 light-years (139.04 parsecs) from the Solar System. First announced in 2025 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 4.1515% across the stellar disk), this world measures 10.89 Earth radii (0.97 Jupiter radii) and has a measured mass of 3179 Earth masses (10 Jupiter masses). Combining its mass and radius yields a mean bulk density of 13.57 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 26.81 g⊕ (262.92 m/s²), and an escape velocity of 191.1 km/s.
In its orbital architecture around TOI-6330, TOI-6330 b completes one full revolution every 6.85 Earth days at a semi-major axis of 0.05763 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 91.5 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.34, swinging from 0.038 AU at periapsis out to 0.0772 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 495 K (+222°C / +432°F) and receiving 9.97 S⊕ (~13,569 W/m²), TOI-6330 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-6330 is classified as a stellar host with an effective photospheric temperature of 3,539 K, a radius of 0.49 R☉, a mass of 0.531 M☉, an estimated bolometric luminosity of 0.034 L☉. Stellar evolution modeling indicates an estimated stellar age of 7.6 Gyr and a metallicity of [Fe/H] = 0.08 dex (metal-rich relative to the Sun). From Earth, TOI-6330 shines at apparent V-band magnitude 16.33 (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: Transiting Exoplanet Survey Satellite (TESS) · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | TOI-6330 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 3,539 K |
| Stellar Radius | 0.4900 R☉ |
| Stellar Mass | 0.5310 M☉ |
| Bolometric Luminosity | 0.034 L☉ |
| Metallicity [Fe/H] | 0.080 dex |
| Stellar Age | 7.600 Gyr |
| Apparent Magnitude | V: 16.330 · G: 14.934 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.057630 AU |
| Orbital Period | 6.85 days |
| Mean Orbital Velocity | 91.5 km/s |
| Orbital Eccentricity (e) | 0.34000 |
| Orbital Inclination (i) | 88.4100° |
| Mean Bulk Density | 13.57 g/cm³ (191.1 km/s vesc) |
| Insolation Flux | 9.9700 S⊕ (~13,569 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 453.500 LY (139.042 pc) |