CFBDSIR J145829+101343 b
Astrophysical Synthesis & Habitability Characterization
CFBDSIR J145829+101343 b is a confirmed gas giant exoplanet orbiting the star CFBDSIR J145829+101343, located approximately 75.3 light-years (23.1 parsecs) from the Solar System. First announced in 2011 by W. M. Keck Observatory using the Imaging detection technique (resolved directly via high-contrast coronagraphic or interferometric imaging), this world measures 12.4 Earth radii (1.11 Jupiter radii) and has a measured mass of 3337.1 Earth masses (10.5 Jupiter masses). Combining its mass and radius yields a mean bulk density of 9.65 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 21.7 g⊕ (212.8 m/s²), and an escape velocity of 183.5 km/s.
In its orbital architecture around CFBDSIR J145829+101343, CFBDSIR J145829+101343 b completes one full revolution every 10037.5 Earth days (27.48Julian years) at a semi-major axis of 2.6 AU (corresponding to the middle-system regime between Mars at 1.52 AU and Jupiter at 5.20 AU). Its mean orbital velocity is approximately 2.8 km/s (compared to Earth's 29.8 km/s).
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 370 K (+97°C / +207°F), CFBDSIR J145829+101343 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star CFBDSIR J145829+101343 is classified as a stellar host with an effective photospheric temperature of 581 K, a mass of 0.021 M☉.
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: W. M. Keck Observatory · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | CFBDSIR J145829+101343 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 581 K |
| Stellar Radius | — |
| Stellar Mass | 0.0210 M☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | — |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 2.600000 AU |
| Orbital Period | 10037.5 days |
| Mean Orbital Velocity | 2.8 km/s |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 9.65 g/cm³ (183.5 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 75.300 LY (23.100 pc) |