TOI-6019 b
Astrophysical Synthesis & Habitability Characterization
TOI-6019 b is a confirmed gas giant exoplanet orbiting the star TOI-6019, located approximately 849.1 light-years (260.34 parsecs) from the Solar System. First announced in 2026 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.3116% across the stellar disk), this world measures 12.3 Earth radii (1.1 Jupiter radii) and has a measured mass of 149 Earth masses (0.47 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.44 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.98 g⊕ (9.61 m/s²), and an escape velocity of 38.9 km/s.
In its orbital architecture around TOI-6019, TOI-6019 b completes one full revolution every 14.548 Earth days at a semi-major axis of 0.1212 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 90.6 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.48, swinging from 0.063 AU at periapsis out to 0.1794 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1095 K (+822°C / +1512°F) and receiving 249.65 S⊕ (~339,774 W/m²), TOI-6019 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-6019 is classified as a stellar host with an effective photospheric temperature of 5,561 K, a radius of 2.02 R☉, a mass of 1.13 M☉, an estimated bolometric luminosity of 3.501 L☉. Stellar evolution modeling indicates an estimated stellar age of 6.4 Gyr and a metallicity of [Fe/H] = 0.04 dex (near-solar heavy-element abundance). From Earth, TOI-6019 shines at apparent V-band magnitude 10.791 (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-6019 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,561 K |
| Stellar Radius | 2.0200 R☉ |
| Stellar Mass | 1.1300 M☉ |
| Bolometric Luminosity | 3.501 L☉ |
| Metallicity [Fe/H] | 0.040 dex |
| Stellar Age | 6.400 Gyr |
| Apparent Magnitude | V: 10.791 · G: 10.564 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.121200 AU |
| Orbital Period | 14.548 days |
| Mean Orbital Velocity | 90.6 km/s |
| Orbital Eccentricity (e) | 0.48000 |
| Orbital Inclination (i) | 86.8000° |
| Mean Bulk Density | 0.44 g/cm³ (38.9 km/s vesc) |
| Insolation Flux | 249.6501 S⊕ (~339,774 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 849.100 LY (260.342 pc) |