CoRoT-1 b
Astrophysical Synthesis & Habitability Characterization
CoRoT-1 b is a confirmed gas giant exoplanet orbiting the star CoRoT-1, located approximately 2569.8 light-years (787.91 parsecs) from the Solar System. First announced in 2008 by CoRoT using the Transit detection technique (producing an estimated primary transit depth of 1.9025% across the stellar disk), this world measures 16.7 Earth radii (1.49 Jupiter radii) and has a measured mass of 327.35 Earth masses (1.03 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.39 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 1.17 g⊕ (11.47 m/s²), and an escape velocity of 49.5 km/s.
In its orbital architecture around CoRoT-1, CoRoT-1 b completes one full revolution every 1.509 Earth days at a semi-major axis of 0.02752 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 198.4 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 1898 K (+1625°C / +2957°F) and receiving 2,852.63 S⊕ (~3,882,429 W/m²), CoRoT-1 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star CoRoT-1 is classified as a solar-type yellow star of spectral type G0 V with an effective photospheric temperature of 5,950 K, a radius of 1.11 R☉, a mass of 0.95 M☉, an estimated bolometric luminosity of 1.385 L☉. Stellar evolution modeling indicates an estimated stellar age of 1.6 Gyr and a metallicity of [Fe/H] = -0.3 dex (metal-poor relative to the Sun). From Earth, CoRoT-1 shines at apparent V-band magnitude 13.623 (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-1 |
| Spectral Type | G0 V |
| Effective Temp (Teff) | 5,950 K |
| Stellar Radius | 1.1100 R☉ |
| Stellar Mass | 0.9500 M☉ |
| Bolometric Luminosity | 1.385 L☉ |
| Metallicity [Fe/H] | -0.300 dex |
| Stellar Age | 1.600 Gyr |
| Apparent Magnitude | V: 13.623 · G: 13.457 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.027520 AU |
| Orbital Period | 1.509 days |
| Mean Orbital Velocity | 198.4 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 85.1000° |
| Mean Bulk Density | 0.39 g/cm³ (49.5 km/s vesc) |
| Insolation Flux | 2852.6300 S⊕ (~3,882,429 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2569.800 LY (787.909 pc) |