TIC 237254473 b
Astrophysical Synthesis & Habitability Characterization
TIC 237254473 b is a confirmed sub-neptune exoplanet orbiting the star TIC 237254473, located approximately 1326.3 light-years (406.63 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 0.0493% across the stellar disk), this world measures 3.3 Earth radii (0.29 Jupiter radii) and has a measured mass of 10.9 Earth masses. Combining its mass and radius yields a mean bulk density of 1.67 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 1 g⊕ (9.81 m/s²), and an escape velocity of 20.3 km/s.
In its orbital architecture around TIC 237254473, TIC 237254473 b completes one full revolution every 10.118 Earth days.
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 3.300 R⊕, TIC 237254473 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 237254473 is classified as a stellar host with an effective photospheric temperature of 5,700 K, a radius of 1.362 R☉, a mass of 1.12 M☉, an estimated bolometric luminosity of 1.757 L☉. Stellar evolution modeling indicates a metallicity of [Fe/H] = -0.006 dex (near-solar heavy-element abundance). From Earth, TIC 237254473 shines at apparent V-band magnitude 12.241 (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 | TIC 237254473 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,700 K |
| Stellar Radius | 1.3620 R☉ |
| Stellar Mass | 1.1200 M☉ |
| Bolometric Luminosity | 1.757 L☉ |
| Metallicity [Fe/H] | -0.006 dex |
| Stellar Age | — |
| Apparent Magnitude | V: 12.241 · G: 12.159 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 10.118 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 1.67 g/cm³ (20.3 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1326.300 LY (406.633 pc) |