OGLE-2006-BLG-109L c
Astrophysical Synthesis & Habitability Characterization
OGLE-2006-BLG-109L c is a confirmed gas giant exoplanet orbiting the star OGLE-2006-BLG-109L, located approximately 4925 light-years (1510 parsecs) from the Solar System. First announced in 2008 by OGLE using the Microlensing detection technique (detected via relativistic gravitational lensing of a background source star), this world measures 11.1 Earth radii (0.99 Jupiter radii) and has a measured mass of 86 Earth masses (0.27 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.35 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.7 g⊕ (6.86 m/s²), and an escape velocity of 31.1 km/s.
In its orbital architecture around OGLE-2006-BLG-109L, OGLE-2006-BLG-109L c completes one full revolution every 4927.5 Earth days (13.49Julian years) at a semi-major axis of 4.5 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 9.9 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.15 carries the world between 3.825 AU at periapsis and 5.175 AU at apoapsis, driving measurable seasonal insolation cycles.
❄️ Thermal Regime (Cryogenic Zone): With an equilibrium temperature of 59 K (-214°C / -353°F), surface water and volatile species on OGLE-2006-BLG-109L c would remain locked in cryogenic ice phases unless warmed by subsurface tidal or radiogenic heating.
The host star OGLE-2006-BLG-109L is classified as a stellar host with a mass of 0.51 M☉. The OGLE-2006-BLG-109L system is a multi-planet architecture hosting 2 confirmed worlds, with OGLE-2006-BLG-109L c sharing its stellar neighborhood alongside OGLE-2006-BLG-109L b.
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-2006-BLG-109L |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | — |
| Stellar Radius | — |
| Stellar Mass | 0.5100 M☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | — |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 4.500000 AU |
| Orbital Period | 4927.5 days |
| Mean Orbital Velocity | 9.9 km/s |
| Orbital Eccentricity (e) | 0.15000 |
| Orbital Inclination (i) | 64.0000° |
| Mean Bulk Density | 0.35 g/cm³ (31.1 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 4925.000 LY (1510.000 pc) |