TOI-5335 b
Astrophysical Synthesis & Habitability Characterization
TOI-5335 b is a confirmed sub-neptune exoplanet orbiting the star TOI-5335, located approximately 1080.5 light-years (331.29 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 0.162% across the stellar disk), this world measures 4.024 Earth radii (0.36 Jupiter radii) and has a measured mass of 15.3 Earth masses. Combining its mass and radius yields a mean bulk density of 1.29 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.94 g⊕ (9.22 m/s²), and an escape velocity of 21.8 km/s.
In its orbital architecture around TOI-5335, TOI-5335 b completes one full revolution every 3.614 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1048 K (+775°C / +1427°F) and receiving 200.83 S⊕ (~273,330 W/m²), TOI-5335 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-5335 is classified as a stellar host with an effective photospheric temperature of 5,529 K, a radius of 0.9166 R☉, a mass of 0.945 M☉, an estimated bolometric luminosity of 0.704 L☉. From Earth, TOI-5335 shines at apparent V-band magnitude 13.428 (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-5335 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,529 K |
| Stellar Radius | 0.9166 R☉ |
| Stellar Mass | 0.9450 M☉ |
| Bolometric Luminosity | 0.704 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 13.428 · G: 13.087 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 3.614 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 86.1238° |
| Mean Bulk Density | 1.29 g/cm³ (21.8 km/s vesc) |
| Insolation Flux | 200.8300 S⊕ (~273,330 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1080.500 LY (331.289 pc) |