SR 12 AB c
Astrophysical Synthesis & Habitability Characterization
SR 12 AB c is a confirmed gas giant exoplanet orbiting the star SR 12 AB, located approximately 366.3 light-years (112.32 parsecs) from the Solar System. First announced in 2010 by Infrared Survey Facility using the Imaging detection technique (resolved directly via high-contrast coronagraphic or interferometric imaging), this world measures 12.3 Earth radii (1.1 Jupiter radii) and has a measured mass of 4131.62 Earth masses (13 Jupiter masses). Combining its mass and radius yields a mean bulk density of 12.24 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 27.31 g⊕ (267.82 m/s²), and an escape velocity of 205 km/s.
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 12.300 R⊕, SR 12 AB c exceeds the empirical ~1.8–2.2 R⊕ Fulton radius valley threshold, indicating a substantial hydrogen-helium or supercritical volatile envelope without a conventional solid terrestrial surface.
The host star SR 12 AB is classified as a stellar host with an effective photospheric temperature of 3,829 K, a radius of 1.1031 R☉, an estimated bolometric luminosity of 0.235 L☉. Stellar evolution modeling indicates an estimated stellar age of 0.002 Gyr. From Earth, SR 12 AB shines at apparent V-band magnitude 13.355 (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: Infrared Survey Facility · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | SR 12 AB |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 3,829 K |
| Stellar Radius | 1.1031 R☉ |
| Stellar Mass | — |
| Bolometric Luminosity | 0.235 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | 0.002 Gyr |
| Apparent Magnitude | V: 13.355 · G: 12.181 |
| System Architecture | 2 Stars, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | — |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 12.24 g/cm³ (205 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 366.300 LY (112.317 pc) |