TOI-4214 b
Astrophysical Synthesis & Habitability Characterization
TOI-4214 b is a confirmed gas giant exoplanet orbiting the star TOI-4214, located approximately 1131.4 light-years (346.88 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 0.4664% across the stellar disk), this world measures 10.682 Earth radii (0.95 Jupiter radii) and has a measured mass of 165.271 Earth masses (0.52 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.75 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 1.45 g⊕ (14.22 m/s²), and an escape velocity of 44 km/s.
In its orbital architecture around TOI-4214, TOI-4214 b completes one full revolution every 3.491 Earth days at a semi-major axis of 0.05018 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 156.4 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.17 carries the world between 0.0416 AU at periapsis and 0.0587 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1642 K (+1369°C / +2496°F) and receiving 1,210.00 S⊕ (~1,646,810 W/m²), TOI-4214 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-4214 is classified as a stellar host with an effective photospheric temperature of 6,370 K, a radius of 1.434 R☉, a mass of 1.382 M☉, an estimated bolometric luminosity of 3.038 L☉. Stellar evolution modeling indicates an estimated stellar age of 1.1 Gyr and a metallicity of [Fe/H] = 0.294 dex (metal-rich relative to the Sun). From Earth, TOI-4214 shines at apparent V-band magnitude 11.79 (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-4214 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,370 K |
| Stellar Radius | 1.4340 R☉ |
| Stellar Mass | 1.3820 M☉ |
| Bolometric Luminosity | 3.038 L☉ |
| Metallicity [Fe/H] | 0.294 dex |
| Stellar Age | 1.100 Gyr |
| Apparent Magnitude | V: 11.790 · G: 11.459 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.050180 AU |
| Orbital Period | 3.491 days |
| Mean Orbital Velocity | 156.4 km/s |
| Orbital Eccentricity (e) | 0.17000 |
| Orbital Inclination (i) | 85.7700° |
| Mean Bulk Density | 0.75 g/cm³ (44 km/s vesc) |
| Insolation Flux | 1210.0000 S⊕ (~1,646,810 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1131.400 LY (346.881 pc) |