TIC 237913194 b
Astrophysical Synthesis & Habitability Characterization
TIC 237913194 b is a confirmed gas giant exoplanet orbiting the star TIC 237913194, located approximately 998.2 light-years (306.06 parsecs) from the Solar System. First announced in 2020 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 1.113% across the stellar disk), this world measures 12.52 Earth radii (1.12 Jupiter radii) and has a measured mass of 617.226 Earth masses (1.94 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.73 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 3.94 g⊕ (38.64 m/s²), and an escape velocity of 78.5 km/s.
In its orbital architecture around TIC 237913194, TIC 237913194 b completes one full revolution every 15.169 Earth days at a semi-major axis of 0.1207 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 86.6 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.575, swinging from 0.0513 AU at periapsis out to 0.1901 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 974 K (+701°C / +1294°F) and receiving 83.39 S⊕ (~113,488 W/m²), TIC 237913194 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TIC 237913194 is classified as a solar-type yellow star of spectral type G3 with an effective photospheric temperature of 5,788 K, a radius of 1.088 R☉, a mass of 1.026 M☉, an estimated bolometric luminosity of 1.192 L☉. Stellar evolution modeling indicates an estimated stellar age of 5.7 Gyr and a metallicity of [Fe/H] = 0.14 dex (metal-rich relative to the Sun). From Earth, TIC 237913194 shines at apparent V-band magnitude 12.144 (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 | TIC 237913194 |
| Spectral Type | G3 |
| Effective Temp (Teff) | 5,788 K |
| Stellar Radius | 1.0880 R☉ |
| Stellar Mass | 1.0260 M☉ |
| Bolometric Luminosity | 1.192 L☉ |
| Metallicity [Fe/H] | 0.140 dex |
| Stellar Age | 5.700 Gyr |
| Apparent Magnitude | V: 12.144 · G: 11.937 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.120700 AU |
| Orbital Period | 15.169 days |
| Mean Orbital Velocity | 86.6 km/s |
| Orbital Eccentricity (e) | 0.57500 |
| Orbital Inclination (i) | 87.0000° |
| Mean Bulk Density | 1.73 g/cm³ (78.5 km/s vesc) |
| Insolation Flux | 83.3856 S⊕ (~113,488 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 998.200 LY (306.063 pc) |