OGLE-2007-BLG-349L AB c
Astrophysical Synthesis & Habitability Characterization
OGLE-2007-BLG-349L AB c is a confirmed gas giant exoplanet orbiting the star OGLE-2007-BLG-349L A, located approximately 9001.9 light-years (2760 parsecs) from the Solar System. First announced in 2016 by OGLE using the Microlensing detection technique (detected via relativistic gravitational lensing of a background source star), this world measures 10.7 Earth radii (0.95 Jupiter radii) and has a measured mass of 80 Earth masses (0.25 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.36 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 30.6 km/s.
In its orbital architecture around OGLE-2007-BLG-349L A, OGLE-2007-BLG-349L AB c completes one full revolution every 2557 Earth days (7Julian years) at a semi-major axis of 2.59 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 11 km/s (compared to Earth's 29.8 km/s).
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 10.700 R⊕, OGLE-2007-BLG-349L 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 OGLE-2007-BLG-349L A is classified as a low-mass red dwarf of spectral type M with a mass of 0.41 M☉. From Earth, OGLE-2007-BLG-349L A shines at apparent V-band magnitude 24.73 (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: OGLE · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | OGLE-2007-BLG-349L A |
| Spectral Type | M |
| Effective Temp (Teff) | — |
| Stellar Radius | — |
| Stellar Mass | 0.4100 M☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 24.730 |
| System Architecture | 2 Stars, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 2.590000 AU |
| Orbital Period | 2557 days |
| Mean Orbital Velocity | 11 km/s |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 0.36 g/cm³ (30.6 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 9001.900 LY (2760.000 pc) |