TOI-2382 b
Astrophysical Synthesis & Habitability Characterization
TOI-2382 b is a confirmed gas giant exoplanet orbiting the star TOI-2382, located approximately 1418.5 light-years (434.92 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 0.6283% across the stellar disk), this world measures 12.251 Earth radii (1.09 Jupiter radii) and has a measured mass of 235.193 Earth masses (0.74 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.71 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 1.57 g⊕ (15.4 m/s²), and an escape velocity of 49 km/s.
In its orbital architecture around TOI-2382, TOI-2382 b completes one full revolution every 4.661 Earth days at a semi-major axis of 0.059 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 137.7 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.18 carries the world between 0.0484 AU at periapsis and 0.0696 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1426 K (+1153°C / +2107°F) and receiving 689.00 S⊕ (~937,729 W/m²), TOI-2382 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2382 is classified as a stellar host with an effective photospheric temperature of 6,033 K, a radius of 1.417 R☉, a mass of 1.26 M☉, an estimated bolometric luminosity of 2.387 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.1 Gyr and a metallicity of [Fe/H] = 0.249 dex (metal-rich relative to the Sun). From Earth, TOI-2382 shines at apparent V-band magnitude 11.814 (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: Transiting Exoplanet Survey Satellite (TESS) · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | TOI-2382 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,033 K |
| Stellar Radius | 1.4170 R☉ |
| Stellar Mass | 1.2600 M☉ |
| Bolometric Luminosity | 2.387 L☉ |
| Metallicity [Fe/H] | 0.249 dex |
| Stellar Age | 3.100 Gyr |
| Apparent Magnitude | V: 11.814 · G: 11.853 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.059000 AU |
| Orbital Period | 4.661 days |
| Mean Orbital Velocity | 137.7 km/s |
| Orbital Eccentricity (e) | 0.18000 |
| Orbital Inclination (i) | 84.1100° |
| Mean Bulk Density | 0.71 g/cm³ (49 km/s vesc) |
| Insolation Flux | 689.0000 S⊕ (~937,729 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1418.500 LY (434.920 pc) |