Gaia23braL b
Astrophysical Synthesis & Habitability Characterization
Gaia23braL b is a confirmed gas giant exoplanet orbiting the star Gaia23braL, located approximately 14122.6 light-years (4330 parsecs) from the Solar System. First announced in 2026 by European Space Agency (ESA) Gaia Satellite using the Microlensing detection technique (detected via relativistic gravitational lensing of a background source star), this world measures 13.5 Earth radii (1.2 Jupiter radii) and has a measured mass of 518.06 Earth masses (1.63 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.16 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.84 g⊕ (27.85 m/s²), and an escape velocity of 69.3 km/s.
❄️ Thermal Regime (Cryogenic Zone): With an equilibrium temperature of 129 K (-144°C / -227°F) and an incident flux of 0.05 S⊕ (~63 W/m²), surface water and volatile species on Gaia23braL b would remain locked in cryogenic ice phases unless warmed by subsurface tidal or radiogenic heating.
The host star Gaia23braL is classified as a stellar host with an effective photospheric temperature of 5,055 K, a radius of 1.3618 R☉, a mass of 0.774 M☉, an estimated bolometric luminosity of 1.086 L☉. From Earth, Gaia23braL shines at apparent V-band magnitude 19.863 (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: European Space Agency (ESA) Gaia Satellite · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | Gaia23braL |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,055 K |
| Stellar Radius | 1.3618 R☉ |
| Stellar Mass | 0.7740 M☉ |
| Bolometric Luminosity | 1.086 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 19.863 · G: 19.412 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 4.847000 AU |
| Orbital Period | — |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 1.16 g/cm³ (69.3 km/s vesc) |
| Insolation Flux | 0.0464 S⊕ (~63 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 14122.600 LY (4330.000 pc) |