TOI-2583 A b
Astrophysical Synthesis & Habitability Characterization
TOI-2583 A b is a confirmed gas giant exoplanet orbiting the star TOI-2583 A, located approximately 1846.7 light-years (566.19 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 0.8056% across the stellar disk), this world measures 14.46 Earth radii (1.29 Jupiter radii) and has a measured mass of 79.457 Earth masses (0.25 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.14 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.38 g⊕ (3.73 m/s²), and an escape velocity of 26.2 km/s.
In its orbital architecture around TOI-2583 A, TOI-2583 A b completes one full revolution every 4.521 Earth days at a semi-major axis of 0.0571 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 137.4 km/s (compared to Earth's 29.8 km/s). The orbit is modeled as circular (e = 0.00), maintaining a constant stellar distance throughout its year.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1456 K (+1183°C / +2161°F) and receiving 750.90 S⊕ (~1,021,975 W/m²), TOI-2583 A b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2583 A is classified as a stellar host with an effective photospheric temperature of 5,936 K, a radius of 1.477 R☉, a mass of 1.215 M☉, an estimated bolometric luminosity of 2.43 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.4 Gyr and a metallicity of [Fe/H] = 0.158 dex (metal-rich relative to the Sun). From Earth, TOI-2583 A shines at apparent V-band magnitude 12.586 (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-2583 A |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,936 K |
| Stellar Radius | 1.4770 R☉ |
| Stellar Mass | 1.2150 M☉ |
| Bolometric Luminosity | 2.43 L☉ |
| Metallicity [Fe/H] | 0.158 dex |
| Stellar Age | 4.400 Gyr |
| Apparent Magnitude | V: 12.586 · G: 12.459 |
| System Architecture | 2 Stars, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.057100 AU |
| Orbital Period | 4.521 days |
| Mean Orbital Velocity | 137.4 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 88.1600° |
| Mean Bulk Density | 0.14 g/cm³ (26.2 km/s vesc) |
| Insolation Flux | 750.9000 S⊕ (~1,021,975 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1846.700 LY (566.189 pc) |