TOI-2236 b
Astrophysical Synthesis & Habitability Characterization
TOI-2236 b is a confirmed gas giant exoplanet orbiting the star TOI-2236, located approximately 1159.8 light-years (355.59 parsecs) from the Solar System. First announced in 2022 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.7015% across the stellar disk), this world measures 14.37 Earth radii (1.28 Jupiter radii) and has a measured mass of 502.169 Earth masses (1.58 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.93 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.43 g⊕ (23.83 m/s²), and an escape velocity of 66.1 km/s.
In its orbital architecture around TOI-2236, TOI-2236 b completes one full revolution every 3.532 Earth days at a semi-major axis of 0.05009 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 154.3 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 1688 K (+1415°C / +2579°F) and receiving 1,356.00 S⊕ (~1,845,516 W/m²), TOI-2236 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2236 is classified as a stellar host with an effective photospheric temperature of 6,248 K, a radius of 1.573 R☉, a mass of 1.343 M☉, an estimated bolometric luminosity of 3.383 L☉. Stellar evolution modeling indicates an estimated stellar age of 2.52 Gyr and a metallicity of [Fe/H] = 0.119 dex (metal-rich relative to the Sun). From Earth, TOI-2236 shines at apparent V-band magnitude 11.6 (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-2236 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,248 K |
| Stellar Radius | 1.5730 R☉ |
| Stellar Mass | 1.3430 M☉ |
| Bolometric Luminosity | 3.383 L☉ |
| Metallicity [Fe/H] | 0.119 dex |
| Stellar Age | 2.520 Gyr |
| Apparent Magnitude | V: 11.600 · G: 11.291 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.050090 AU |
| Orbital Period | 3.532 days |
| Mean Orbital Velocity | 154.3 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 83.5800° |
| Mean Bulk Density | 0.93 g/cm³ (66.1 km/s vesc) |
| Insolation Flux | 1356.0000 S⊕ (~1,845,516 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1159.800 LY (355.590 pc) |