TOI-3364 b
Astrophysical Synthesis & Habitability Characterization
TOI-3364 b is a confirmed gas giant exoplanet orbiting the star TOI-3364, located approximately 906.4 light-years (277.9 parsecs) from the Solar System. First announced in 2023 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.6243% across the stellar disk), this world measures 12.229 Earth radii (1.09 Jupiter radii) and has a measured mass of 530.773 Earth masses (1.67 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.6 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 3.55 g⊕ (34.81 m/s²), and an escape velocity of 73.7 km/s.
In its orbital architecture around TOI-3364, TOI-3364 b completes one full revolution every 5.877 Earth days at a semi-major axis of 0.0675 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 125 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 1264 K (+991°C / +1816°F) and receiving 425.00 S⊕ (~578,425 W/m²), TOI-3364 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-3364 is classified as a stellar host with an effective photospheric temperature of 5,706 K, a radius of 1.419 R☉, a mass of 1.186 M☉, an estimated bolometric luminosity of 1.915 L☉. Stellar evolution modeling indicates an estimated stellar age of 5.4 Gyr and a metallicity of [Fe/H] = 0.387 dex (metal-rich relative to the Sun). From Earth, TOI-3364 shines at apparent V-band magnitude 11.875 (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-3364 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,706 K |
| Stellar Radius | 1.4190 R☉ |
| Stellar Mass | 1.1860 M☉ |
| Bolometric Luminosity | 1.915 L☉ |
| Metallicity [Fe/H] | 0.387 dex |
| Stellar Age | 5.400 Gyr |
| Apparent Magnitude | V: 11.875 · G: 11.295 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.067500 AU |
| Orbital Period | 5.877 days |
| Mean Orbital Velocity | 125 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 88.7900° |
| Mean Bulk Density | 1.6 g/cm³ (73.7 km/s vesc) |
| Insolation Flux | 425.0000 S⊕ (~578,425 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 906.400 LY (277.899 pc) |