TOI-5110 b
Astrophysical Synthesis & Habitability Characterization
TOI-5110 b is a confirmed gas giant exoplanet orbiting the star TOI-5110, located approximately 1279.4 light-years (392.26 parsecs) from the Solar System. First announced in 2024 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.2217% across the stellar disk), this world measures 11.982 Earth radii (1.07 Jupiter radii) and has a measured mass of 921.702 Earth masses (2.9 Jupiter masses). Combining its mass and radius yields a mean bulk density of 2.95 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 6.42 g⊕ (62.96 m/s²), and an escape velocity of 98.1 km/s.
In its orbital architecture around TOI-5110, TOI-5110 b completes one full revolution every 30.159 Earth days at a semi-major axis of 0.2157 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 77.8 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.745, swinging from 0.055 AU at periapsis out to 0.3764 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 976 K (+703°C / +1297°F) and receiving 15.10 S⊕ (~20,555 W/m²), TOI-5110 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-5110 is classified as a stellar host with an effective photospheric temperature of 6,160 K, a radius of 2.333 R☉, a mass of 1.469 M☉, an estimated bolometric luminosity of 7.031 L☉. Stellar evolution modeling indicates an estimated stellar age of 4 Gyr and a metallicity of [Fe/H] = 0.065 dex (metal-rich relative to the Sun). From Earth, TOI-5110 shines at apparent V-band magnitude 11.06 (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-5110 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,160 K |
| Stellar Radius | 2.3330 R☉ |
| Stellar Mass | 1.4690 M☉ |
| Bolometric Luminosity | 7.031 L☉ |
| Metallicity [Fe/H] | 0.065 dex |
| Stellar Age | 4.000 Gyr |
| Apparent Magnitude | V: 11.060 · G: 10.682 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.215700 AU |
| Orbital Period | 30.159 days |
| Mean Orbital Velocity | 77.8 km/s |
| Orbital Eccentricity (e) | 0.74500 |
| Orbital Inclination (i) | 85.2000° |
| Mean Bulk Density | 2.95 g/cm³ (98.1 km/s vesc) |
| Insolation Flux | 15.1027 S⊕ (~20,555 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1279.400 LY (392.259 pc) |