CoRoT-30 b
Astrophysical Synthesis & Habitability Characterization
CoRoT-30 b is a confirmed gas giant exoplanet orbiting the star CoRoT-30, located approximately 3366.7 light-years (1032.23 parsecs) from the Solar System. First announced in 2020 by CoRoT using the Transit detection technique (producing an estimated primary transit depth of 1.2983% across the stellar disk), this world measures 11.31 Earth radii (1.01 Jupiter radii) and has a measured mass of 921.707 Earth masses (2.9 Jupiter masses). Combining its mass and radius yields a mean bulk density of 3.51 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 7.21 g⊕ (70.71 m/s²), and an escape velocity of 101 km/s.
In its orbital architecture around CoRoT-30, CoRoT-30 b completes one full revolution every 9.06 Earth days at a semi-major axis of 0.0844 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 101.3 km/s (compared to Earth's 29.8 km/s). With a near-circular eccentricity of e = 0.007 (ranging from 0.0838 AU at periapsis to 0.085 AU at apoapsis), the planet experiences minimal orbital distance variation.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 895 K (+622°C / +1152°F) and receiving 89.29 S⊕ (~121,520 W/m²), CoRoT-30 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star CoRoT-30 is classified as a solar-type yellow star of spectral type G3 V with an effective photospheric temperature of 5,650 K, a radius of 0.91 R☉, a mass of 0.98 M☉, an estimated bolometric luminosity of 0.757 L☉. Stellar evolution modeling indicates an estimated stellar age of 3 Gyr and a metallicity of [Fe/H] = 0.02 dex (near-solar heavy-element abundance). From Earth, CoRoT-30 shines at apparent V-band magnitude 15.571 (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-30 |
| Spectral Type | G3 V |
| Effective Temp (Teff) | 5,650 K |
| Stellar Radius | 0.9100 R☉ |
| Stellar Mass | 0.9800 M☉ |
| Bolometric Luminosity | 0.757 L☉ |
| Metallicity [Fe/H] | 0.020 dex |
| Stellar Age | 3.000 Gyr |
| Apparent Magnitude | V: 15.571 · G: 15.413 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.084400 AU |
| Orbital Period | 9.06 days |
| Mean Orbital Velocity | 101.3 km/s |
| Orbital Eccentricity (e) | 0.00700 |
| Orbital Inclination (i) | 90.0000° |
| Mean Bulk Density | 3.51 g/cm³ (101 km/s vesc) |
| Insolation Flux | 89.2872 S⊕ (~121,520 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 3366.700 LY (1032.230 pc) |