TOI-5926 b
Astrophysical Synthesis & Habitability Characterization
TOI-5926 b is a confirmed gas giant exoplanet orbiting the star TOI-5926, located approximately 897.3 light-years (275.1 parsecs) from the Solar System. First announced in 2026 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.6077% across the stellar disk), this world measures 7.568 Earth radii (0.68 Jupiter radii) and has a measured mass of 44.6 Earth masses (0.14 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.57 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.78 g⊕ (7.65 m/s²), and an escape velocity of 27.2 km/s.
In its orbital architecture around TOI-5926, TOI-5926 b completes one full revolution every 3.811 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 987 K (+714°C / +1317°F) and receiving 157.64 S⊕ (~214,553 W/m²), TOI-5926 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-5926 is classified as a stellar host with an effective photospheric temperature of 5,389 K, a radius of 0.89 R☉, a mass of 0.946 M☉, an estimated bolometric luminosity of 0.599 L☉. From Earth, TOI-5926 shines at apparent V-band magnitude 12.593 (faint and requiring research-grade or CCD telescopic photometry) in the Northern 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: Transiting Exoplanet Survey Satellite (TESS) · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | TOI-5926 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,389 K |
| Stellar Radius | 0.8900 R☉ |
| Stellar Mass | 0.9460 M☉ |
| Bolometric Luminosity | 0.599 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 12.593 · G: 12.510 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 3.811 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 87.7868° |
| Mean Bulk Density | 0.57 g/cm³ (27.2 km/s vesc) |
| Insolation Flux | 157.6440 S⊕ (~214,553 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 897.300 LY (275.103 pc) |