TOI-4363 b
Astrophysical Synthesis & Habitability Characterization
TOI-4363 b is a confirmed super-earth exoplanet orbiting the star TOI-4363, located approximately 253.7 light-years (77.78 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 0.0549% across the stellar disk), this world measures 1.767 Earth radii and has a measured mass of 3.77 Earth masses. Combining its mass and radius yields a mean bulk density of 3.77 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.21 g⊕ (11.87 m/s²), and an escape velocity of 16.3 km/s.
In its orbital architecture around TOI-4363, TOI-4363 b completes one full revolution every 2.119 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 885 K (+612°C / +1134°F) and receiving 144.79 S⊕ (~197,053 W/m²), TOI-4363 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-4363 is classified as a stellar host with an effective photospheric temperature of 4,278 K, a radius of 0.6913 R☉, a mass of 0.62 M☉, an estimated bolometric luminosity of 0.144 L☉. From Earth, TOI-4363 shines at apparent V-band magnitude 12.678 (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-4363 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,278 K |
| Stellar Radius | 0.6913 R☉ |
| Stellar Mass | 0.6200 M☉ |
| Bolometric Luminosity | 0.144 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 12.678 · G: 12.083 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 2.119 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 86.4349° |
| Mean Bulk Density | 3.77 g/cm³ (16.3 km/s vesc) |
| Insolation Flux | 144.7854 S⊕ (~197,053 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 253.700 LY (77.775 pc) |