TOI-4930 b
Astrophysical Synthesis & Habitability Characterization
TOI-4930 b is a confirmed gas giant exoplanet orbiting the star TOI-4930, located approximately 1349.5 light-years (413.76 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 0.3006% across the stellar disk), this world measures 6.933 Earth radii (0.62 Jupiter radii) and has a measured mass of 38.4 Earth masses (0.12 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.64 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.8 g⊕ (7.85 m/s²), and an escape velocity of 26.3 km/s.
In its orbital architecture around TOI-4930, TOI-4930 b completes one full revolution every 6.781 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1169 K (+896°C / +1645°F) and receiving 310.08 S⊕ (~422,018 W/m²), TOI-4930 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-4930 is classified as a stellar host with an effective photospheric temperature of 5,625 K, a radius of 1.1593 R☉, a mass of 1.04 M☉, an estimated bolometric luminosity of 1.207 L☉. From Earth, TOI-4930 shines at apparent V-band magnitude 12.704 (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: Transiting Exoplanet Survey Satellite (TESS) · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | TOI-4930 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,625 K |
| Stellar Radius | 1.1593 R☉ |
| Stellar Mass | 1.0400 M☉ |
| Bolometric Luminosity | 1.207 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 12.704 · G: 12.519 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 6.781 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 86.4796° |
| Mean Bulk Density | 0.64 g/cm³ (26.3 km/s vesc) |
| Insolation Flux | 310.0790 S⊕ (~422,018 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1349.500 LY (413.757 pc) |