TOI-2497 b
Astrophysical Synthesis & Habitability Characterization
TOI-2497 b is a confirmed gas giant exoplanet orbiting the star TOI-2497, located approximately 930.5 light-years (285.29 parsecs) from the Solar System. First announced in 2023 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.1873% across the stellar disk), this world measures 11.142 Earth radii (0.99 Jupiter radii) and has a measured mass of 1531.933 Earth masses (4.82 Jupiter masses). Combining its mass and radius yields a mean bulk density of 6.11 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 12.34 g⊕ (121.01 m/s²), and an escape velocity of 131.2 km/s.
In its orbital architecture around TOI-2497, TOI-2497 b completes one full revolution every 10.656 Earth days at a semi-major axis of 0.1166 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 119 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.195 carries the world between 0.0939 AU at periapsis and 0.1393 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1595 K (+1322°C / +2412°F) and receiving 997.81 S⊕ (~1,358,017 W/m²), TOI-2497 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2497 is classified as a stellar host with an effective photospheric temperature of 7,360 K, a radius of 2.36 R☉, a mass of 1.859 M☉, an estimated bolometric luminosity of 14.663 L☉. Stellar evolution modeling indicates an estimated stellar age of 1 Gyr and a metallicity of [Fe/H] = 0.094 dex (metal-rich relative to the Sun). From Earth, TOI-2497 shines at apparent V-band magnitude 9.547 (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-2497 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 7,360 K |
| Stellar Radius | 2.3600 R☉ |
| Stellar Mass | 1.8590 M☉ |
| Bolometric Luminosity | 14.663 L☉ |
| Metallicity [Fe/H] | 0.094 dex |
| Stellar Age | 1.000 Gyr |
| Apparent Magnitude | V: 9.547 · G: 9.472 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.116600 AU |
| Orbital Period | 10.656 days |
| Mean Orbital Velocity | 119 km/s |
| Orbital Eccentricity (e) | 0.19500 |
| Orbital Inclination (i) | 88.1600° |
| Mean Bulk Density | 6.11 g/cm³ (131.2 km/s vesc) |
| Insolation Flux | 997.8085 S⊕ (~1,358,017 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 930.500 LY (285.289 pc) |