TOI-2384 b
Astrophysical Synthesis & Habitability Characterization
TOI-2384 b is a confirmed gas giant exoplanet orbiting the star TOI-2384, located approximately 624.6 light-years (191.51 parsecs) from the Solar System. First announced in 2024 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 2.9689% across the stellar disk), this world measures 11.489 Earth radii (1.02 Jupiter radii) and has a measured mass of 624.851 Earth masses (1.97 Jupiter masses). Combining its mass and radius yields a mean bulk density of 2.27 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 4.73 g⊕ (46.39 m/s²), and an escape velocity of 82.5 km/s.
In its orbital architecture around TOI-2384, TOI-2384 b completes one full revolution every 2.136 Earth days at a semi-major axis of 0.02793 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 142.3 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 890 K (+617°C / +1143°F) and receiving 104.30 S⊕ (~141,952 W/m²), TOI-2384 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2384 is classified as a stellar host with an effective photospheric temperature of 3,943 K, a radius of 0.6113 R☉, a mass of 0.635 M☉, an estimated bolometric luminosity of 0.081 L☉. Stellar evolution modeling indicates an estimated stellar age of 9.4 Gyr and a metallicity of [Fe/H] = 0.332 dex (metal-rich relative to the Sun). From Earth, TOI-2384 shines at apparent V-band magnitude 15.103 (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-2384 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 3,943 K |
| Stellar Radius | 0.6113 R☉ |
| Stellar Mass | 0.6350 M☉ |
| Bolometric Luminosity | 0.081 L☉ |
| Metallicity [Fe/H] | 0.332 dex |
| Stellar Age | 9.400 Gyr |
| Apparent Magnitude | V: 15.103 · G: 14.399 |
| System Architecture | 2 Stars, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.027930 AU |
| Orbital Period | 2.136 days |
| Mean Orbital Velocity | 142.3 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 88.3700° |
| Mean Bulk Density | 2.27 g/cm³ (82.5 km/s vesc) |
| Insolation Flux | 104.3000 S⊕ (~141,952 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 624.600 LY (191.510 pc) |