CoRoT-19 b
Astrophysical Synthesis & Habitability Characterization
CoRoT-19 b is a confirmed gas giant exoplanet orbiting the star CoRoT-19, located approximately 2578.8 light-years (790.66 parsecs) from the Solar System. First announced in 2011 by CoRoT using the Transit detection technique (producing an estimated primary transit depth of 0.6455% across the stellar disk), this world measures 14.46 Earth radii (1.29 Jupiter radii) and has a measured mass of 352.78 Earth masses (1.11 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.64 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 1.69 g⊕ (16.57 m/s²), and an escape velocity of 55.3 km/s.
In its orbital architecture around CoRoT-19, CoRoT-19 b completes one full revolution every 3.897 Earth days at a semi-major axis of 0.0518 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 144.6 km/s (compared to Earth's 29.8 km/s). With a near-circular eccentricity of e = 0.047 (ranging from 0.0494 AU at periapsis to 0.0542 AU at apoapsis), the planet experiences minimal orbital distance variation.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 2000 K (+1727°C / +3141°F) and receiving 1,103.81 S⊕ (~1,502,284 W/m²), CoRoT-19 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star CoRoT-19 is classified as a warm F-type star of spectral type F9 V with an effective photospheric temperature of 6,090 K, a radius of 1.65 R☉, a mass of 1.21 M☉, an estimated bolometric luminosity of 3.36 L☉. Stellar evolution modeling indicates an estimated stellar age of 5 Gyr and a metallicity of [Fe/H] = -0.02 dex (near-solar heavy-element abundance). From Earth, CoRoT-19 shines at apparent V-band magnitude 14.135 (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: CoRoT · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | CoRoT-19 |
| Spectral Type | F9 V |
| Effective Temp (Teff) | 6,090 K |
| Stellar Radius | 1.6500 R☉ |
| Stellar Mass | 1.2100 M☉ |
| Bolometric Luminosity | 3.36 L☉ |
| Metallicity [Fe/H] | -0.020 dex |
| Stellar Age | 5.000 Gyr |
| Apparent Magnitude | V: 14.135 · G: 13.783 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.051800 AU |
| Orbital Period | 3.897 days |
| Mean Orbital Velocity | 144.6 km/s |
| Orbital Eccentricity (e) | 0.04700 |
| Orbital Inclination (i) | 88.0000° |
| Mean Bulk Density | 0.64 g/cm³ (55.3 km/s vesc) |
| Insolation Flux | 1103.8090 S⊕ (~1,502,284 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2578.800 LY (790.663 pc) |