TOI-4562 b
Astrophysical Synthesis & Habitability Characterization
TOI-4562 b is a confirmed gas giant exoplanet orbiting the star TOI-4562, located approximately 1107.6 light-years (339.61 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 0.9943% across the stellar disk), this world measures 12.53 Earth radii (1.12 Jupiter radii) and has a measured mass of 732 Earth masses (2.3 Jupiter masses). Combining its mass and radius yields a mean bulk density of 2.05 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 4.66 g⊕ (45.7 m/s²), and an escape velocity of 85.5 km/s.
In its orbital architecture around TOI-4562, TOI-4562 b completes one full revolution every 225.106 Earth days at a semi-major axis of 0.768 AU (comparable to the inner terrestrial zone between Venus, Earth at 1.00 AU, and Mars at 1.52 AU). Its mean orbital velocity is approximately 37.1 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.76, swinging from 0.1843 AU at periapsis out to 1.3517 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 12.530 R⊕, TOI-4562 b exceeds the empirical ~1.8–2.2 R⊕ Fulton radius valley threshold, indicating a substantial hydrogen-helium or supercritical volatile envelope without a conventional solid terrestrial surface.
The host star TOI-4562 is classified as a warm F-type star of spectral type F7 V with an effective photospheric temperature of 6,096 K, a radius of 1.152 R☉, a mass of 1.192 M☉, an estimated bolometric luminosity of 1.644 L☉. Stellar evolution modeling indicates an estimated stellar age of 0.7 Gyr and a metallicity of [Fe/H] = 0.08 dex (metal-rich relative to the Sun). From Earth, TOI-4562 shines at apparent V-band magnitude 12.14 (faint and requiring research-grade or CCD telescopic photometry) in the Southern celestial hemisphere. The TOI-4562 system is a multi-planet architecture hosting 2 confirmed worlds, with TOI-4562 b sharing its stellar neighborhood alongside TOI-4562 c.
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-4562 |
| Spectral Type | F7 V |
| Effective Temp (Teff) | 6,096 K |
| Stellar Radius | 1.1520 R☉ |
| Stellar Mass | 1.1920 M☉ |
| Bolometric Luminosity | 1.644 L☉ |
| Metallicity [Fe/H] | 0.080 dex |
| Stellar Age | 0.700 Gyr |
| Apparent Magnitude | V: 12.140 · G: 11.955 |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.768000 AU |
| Orbital Period | 225.106 days |
| Mean Orbital Velocity | 37.1 km/s |
| Orbital Eccentricity (e) | 0.76000 |
| Orbital Inclination (i) | 89.1500° |
| Mean Bulk Density | 2.05 g/cm³ (85.5 km/s vesc) |
| Insolation Flux | 3.2011 S⊕ (~4,357 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1107.600 LY (339.605 pc) |