TIC 34085383 b
Astrophysical Synthesis & Habitability Characterization
TIC 34085383 b is a confirmed sub-neptune exoplanet orbiting the star TIC 34085383, located approximately 486.4 light-years (149.12 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 0.1969% across the stellar disk), this world measures 3.92 Earth radii (0.35 Jupiter radii) and has a measured mass of 14.6 Earth masses. Combining its mass and radius yields a mean bulk density of 1.34 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.95 g⊕ (9.32 m/s²), and an escape velocity of 21.6 km/s.
In its orbital architecture around TIC 34085383, TIC 34085383 b completes one full revolution every 3.478 Earth days.
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 3.920 R⊕, TIC 34085383 b 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 TIC 34085383 is classified as a stellar host with an effective photospheric temperature of 4,695 K, a radius of 0.81 R☉, a mass of 0.733 M☉, an estimated bolometric luminosity of 0.286 L☉. From Earth, TIC 34085383 shines at apparent V-band magnitude 12.552 (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 | TIC 34085383 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,695 K |
| Stellar Radius | 0.8100 R☉ |
| Stellar Mass | 0.7330 M☉ |
| Bolometric Luminosity | 0.286 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 12.552 · G: 12.230 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 3.478 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 87.2174° |
| Mean Bulk Density | 1.34 g/cm³ (21.6 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 486.400 LY (149.120 pc) |