TOI-5232 b
Astrophysical Synthesis & Habitability Characterization
TOI-5232 b is a confirmed gas giant exoplanet orbiting the star TOI-5232, located approximately 1987.6 light-years (609.39 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 0.4307% across the stellar disk), this world measures 12.778 Earth radii (1.14 Jupiter radii) and has a measured mass of 743.718 Earth masses (2.34 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.97 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 4.55 g⊕ (44.62 m/s²), and an escape velocity of 85.3 km/s.
In its orbital architecture around TOI-5232, TOI-5232 b completes one full revolution every 4.097 Earth days at a semi-major axis of 0.05593 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 148.5 km/s (compared to Earth's 29.8 km/s). With a near-circular eccentricity of e = 0.035 (ranging from 0.054 AU at periapsis to 0.0579 AU at apoapsis), the planet experiences minimal orbital distance variation.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1772 K (+1499°C / +2730°F) and receiving 1,193.86 S⊕ (~1,624,843 W/m²), TOI-5232 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-5232 is classified as a stellar host with an effective photospheric temperature of 6,500 K, a radius of 1.785 R☉, a mass of 1.389 M☉, an estimated bolometric luminosity of 5.103 L☉. Stellar evolution modeling indicates an estimated stellar age of 2.37 Gyr and a metallicity of [Fe/H] = -0.104 dex (metal-poor relative to the Sun). From Earth, TOI-5232 shines at apparent V-band magnitude 12.246 (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-5232 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,500 K |
| Stellar Radius | 1.7850 R☉ |
| Stellar Mass | 1.3890 M☉ |
| Bolometric Luminosity | 5.103 L☉ |
| Metallicity [Fe/H] | -0.104 dex |
| Stellar Age | 2.370 Gyr |
| Apparent Magnitude | V: 12.246 · G: 12.168 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.055930 AU |
| Orbital Period | 4.097 days |
| Mean Orbital Velocity | 148.5 km/s |
| Orbital Eccentricity (e) | 0.03500 |
| Orbital Inclination (i) | 88.3000° |
| Mean Bulk Density | 1.97 g/cm³ (85.3 km/s vesc) |
| Insolation Flux | 1193.8600 S⊕ (~1,624,843 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1987.600 LY (609.388 pc) |