CoRoT-11 b
Astrophysical Synthesis & Habitability Characterization
CoRoT-11 b is a confirmed gas giant exoplanet orbiting the star CoRoT-11, located approximately 2136.4 light-years (655.04 parsecs) from the Solar System. First announced in 2010 by CoRoT using the Transit detection technique (producing an estimated primary transit depth of 1.1507% across the stellar disk), this world measures 16.03 Earth radii (1.43 Jupiter radii) and has a measured mass of 740.51 Earth masses (2.33 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.99 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.88 g⊕ (28.24 m/s²), and an escape velocity of 76 km/s.
In its orbital architecture around CoRoT-11, CoRoT-11 b completes one full revolution every 2.994 Earth days at a semi-major axis of 0.0436 AU (an ultra-close orbit less than one-seventh of Mercury's 0.387 AU distance from the Sun, where strong stellar tidal forces typically induce synchronous rotation). Its mean orbital velocity is approximately 158.4 km/s (compared to Earth's 29.8 km/s). The orbit is modeled as circular (e = 0.00), maintaining a constant stellar distance throughout its year.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1657 K (+1384°C / +2523°F) and receiving 1,890.65 S⊕ (~2,573,173 W/m²), CoRoT-11 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star CoRoT-11 is classified as a warm F-type star of spectral type F6 V with an effective photospheric temperature of 6,440 K, a radius of 1.37 R☉, a mass of 1.27 M☉, an estimated bolometric luminosity of 2.897 L☉. Stellar evolution modeling indicates an estimated stellar age of 2 Gyr and a metallicity of [Fe/H] = -0.03 dex (near-solar heavy-element abundance). From Earth, CoRoT-11 shines at apparent V-band magnitude 12.897 (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: CoRoT · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | CoRoT-11 |
| Spectral Type | F6 V |
| Effective Temp (Teff) | 6,440 K |
| Stellar Radius | 1.3700 R☉ |
| Stellar Mass | 1.2700 M☉ |
| Bolometric Luminosity | 2.897 L☉ |
| Metallicity [Fe/H] | -0.030 dex |
| Stellar Age | 2.000 Gyr |
| Apparent Magnitude | V: 12.897 · G: 12.841 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.043600 AU |
| Orbital Period | 2.994 days |
| Mean Orbital Velocity | 158.4 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 83.1700° |
| Mean Bulk Density | 0.99 g/cm³ (76 km/s vesc) |
| Insolation Flux | 1890.6490 S⊕ (~2,573,173 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2136.400 LY (655.037 pc) |