TOI-2104 b
Astrophysical Synthesis & Habitability Characterization
TOI-2104 b is a confirmed super-earth exoplanet orbiting the star TOI-2104, located approximately 250.3 light-years (76.74 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 0.0375% across the stellar disk), this world measures 1.529 Earth radii and has a measured mass of 2.95 Earth masses. Combining its mass and radius yields a mean bulk density of 4.55 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.26 g⊕ (12.36 m/s²), and an escape velocity of 15.5 km/s.
In its orbital architecture around TOI-2104, TOI-2104 b completes one full revolution every 5.904 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 846 K (+573°C / +1063°F) and receiving 85.34 S⊕ (~116,142 W/m²), TOI-2104 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2104 is classified as a stellar host with an effective photospheric temperature of 4,856 K, a radius of 0.7238 R☉, a mass of 0.8 M☉, an estimated bolometric luminosity of 0.261 L☉. From Earth, TOI-2104 shines at apparent V-band magnitude 10.838 (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-2104 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,856 K |
| Stellar Radius | 0.7238 R☉ |
| Stellar Mass | 0.8000 M☉ |
| Bolometric Luminosity | 0.261 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 10.838 · G: 10.642 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 5.904 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 88.2755° |
| Mean Bulk Density | 4.55 g/cm³ (15.5 km/s vesc) |
| Insolation Flux | 85.3357 S⊕ (~116,142 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 250.300 LY (76.742 pc) |