TOI-5350 b
Astrophysical Synthesis & Habitability Characterization
TOI-5350 b is a confirmed gas giant exoplanet orbiting the star TOI-5350, located approximately 904.8 light-years (277.42 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 0.8128% across the stellar disk), this world measures 12.42 Earth radii (1.11 Jupiter radii) and has a measured mass of 2094.489 Earth masses (6.59 Jupiter masses). Combining its mass and radius yields a mean bulk density of 6.03 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 13.58 g⊕ (133.17 m/s²), and an escape velocity of 145.3 km/s.
In its orbital architecture around TOI-5350, TOI-5350 b completes one full revolution every 7.581 Earth days at a semi-major axis of 0.0796 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 114.2 km/s (compared to Earth's 29.8 km/s). With a near-circular eccentricity of e = 0.0165 (ranging from 0.0783 AU at periapsis to 0.0809 AU at apoapsis), the planet experiences minimal orbital distance variation.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1195 K (+922°C / +1692°F) and receiving 321.88 S⊕ (~438,077 W/m²), TOI-5350 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-5350 is classified as a stellar host with an effective photospheric temperature of 6,220 K, a radius of 1.263 R☉, a mass of 1.167 M☉, an estimated bolometric luminosity of 2.142 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.1 Gyr and a metallicity of [Fe/H] = 0.044 dex (near-solar heavy-element abundance). From Earth, TOI-5350 shines at apparent V-band magnitude 11.953 (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-5350 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,220 K |
| Stellar Radius | 1.2630 R☉ |
| Stellar Mass | 1.1670 M☉ |
| Bolometric Luminosity | 2.142 L☉ |
| Metallicity [Fe/H] | 0.044 dex |
| Stellar Age | 3.100 Gyr |
| Apparent Magnitude | V: 11.953 · G: 11.706 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.079600 AU |
| Orbital Period | 7.581 days |
| Mean Orbital Velocity | 114.2 km/s |
| Orbital Eccentricity (e) | 0.01650 |
| Orbital Inclination (i) | 89.0400° |
| Mean Bulk Density | 6.03 g/cm³ (145.3 km/s vesc) |
| Insolation Flux | 321.8790 S⊕ (~438,077 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 904.800 LY (277.419 pc) |