TIC 320419023 b

Astrophysical Synthesis & Habitability Characterization

TIC 320419023 b is a confirmed sub-neptune exoplanet orbiting the star TIC 320419023, located approximately 942.2 light-years (288.89 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 0.0713% across the stellar disk), this world measures 2.773 Earth radii and has a measured mass of 8.11 Earth masses. Combining its mass and radius yields a mean bulk density of 2.1 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.05 g⊕ (10.3 m/s²), and an escape velocity of 19.1 km/s.

In its orbital architecture around TIC 320419023, TIC 320419023 b completes one full revolution every 5.264 Earth days.

☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 2.773 R⊕, TIC 320419023 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 320419023 is classified as a stellar host with an effective photospheric temperature of 5,703 K, a radius of 0.9523 R☉, a mass of 1.056 M☉, an estimated bolometric luminosity of 0.861 L☉. From Earth, TIC 320419023 shines at apparent V-band magnitude 12.157 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere.

Discovery Facility: Transiting Exoplanet Survey Satellite (TESS) · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).