OGLE-2012-BLG-0026L b
Astrophysical Synthesis & Habitability Characterization
OGLE-2012-BLG-0026L b is a confirmed gas giant exoplanet orbiting the star OGLE-2012-BLG-0026L, located approximately 13108.2 light-years (4019 parsecs) from the Solar System. First announced in 2012 by OGLE using the Microlensing detection technique (detected via relativistic gravitational lensing of a background source star), this world measures 7.72 Earth radii (0.69 Jupiter radii) and has a measured mass of 46.1 Earth masses (0.15 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.55 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.77 g⊕ (7.55 m/s²), and an escape velocity of 27.3 km/s.
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 7.720 R⊕, OGLE-2012-BLG-0026L b 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 OGLE-2012-BLG-0026L is classified as a solar-type yellow star of spectral type G5 V with a mass of 1.06 M☉. Stellar evolution modeling indicates an estimated stellar age of 5 Gyr. From Earth, OGLE-2012-BLG-0026L shines at apparent V-band magnitude 20.66 (faint and requiring research-grade or CCD telescopic photometry) in the Southern celestial hemisphere. The OGLE-2012-BLG-0026L system is a multi-planet architecture hosting 2 confirmed worlds, with OGLE-2012-BLG-0026L b sharing its stellar neighborhood alongside OGLE-2012-BLG-0026L c.
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: OGLE · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | OGLE-2012-BLG-0026L |
| Spectral Type | G5 V |
| Effective Temp (Teff) | — |
| Stellar Radius | — |
| Stellar Mass | 1.0600 M☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | 5.000 Gyr |
| Apparent Magnitude | V: 20.660 |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 4.000000 AU |
| Orbital Period | — |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 0.55 g/cm³ (27.3 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 13108.200 LY (4019.000 pc) |