TOI-5082.01
Astrophysical Synthesis & Habitability Characterization
TOI-5082.01 is a confirmed sub-neptune exoplanet orbiting the star TOI-5082, located approximately 140.7 light-years (43.14 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 0.0631% across the stellar disk), this world measures 2.548 Earth radii and has a measured mass of 7.03 Earth masses. Combining its mass and radius yields a mean bulk density of 2.34 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.08 g⊕ (10.59 m/s²), and an escape velocity of 18.6 km/s.
In its orbital architecture around TOI-5082, TOI-5082.01 completes one full revolution every 4.24 Earth days at a semi-major axis of 0.051205 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 131.4 km/s (compared to Earth's 29.8 km/s).
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1165 K (+892°C / +1638°F) and receiving 254.59 S⊕ (~346,494 W/m²), TOI-5082.01 orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-5082 is classified as a stellar host with an effective photospheric temperature of 5,670 K, a radius of 0.93 R☉, a mass of 0.9967 M☉, an estimated bolometric luminosity of 0.802 L☉. Stellar evolution modeling indicates a metallicity of [Fe/H] = 0.09 dex (metal-rich relative to the Sun). From Earth, TOI-5082 shines at apparent V-band magnitude 8.25 (accessible to binoculars and small amateur telescopes) 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-5082 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,670 K |
| Stellar Radius | 0.9300 R☉ |
| Stellar Mass | 0.9967 M☉ |
| Bolometric Luminosity | 0.802 L☉ |
| Metallicity [Fe/H] | 0.090 dex |
| Stellar Age | — |
| Apparent Magnitude | V: 8.250 · G: 8.086 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.051205 AU |
| Orbital Period | 4.24 days |
| Mean Orbital Velocity | 131.4 km/s |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 2.34 g/cm³ (18.6 km/s vesc) |
| Insolation Flux | 254.5880 S⊕ (~346,494 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 140.700 LY (43.141 pc) |