TOI-2046 b
Astrophysical Synthesis & Habitability Characterization
TOI-2046 b is a confirmed gas giant exoplanet orbiting the star TOI-2046, located approximately 944.8 light-years (289.67 parsecs) from the Solar System. First announced in 2022 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 1.4957% across the stellar disk), this world measures 16.141 Earth radii (1.44 Jupiter radii) and has a measured mass of 731.005 Earth masses (2.3 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.96 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.81 g⊕ (27.56 m/s²), and an escape velocity of 75.3 km/s.
In its orbital architecture around TOI-2046, TOI-2046 b completes one full revolution every 1.497 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1829 K (+1556°C / +2833°F) and receiving 2,643.66 S⊕ (~3,598,014 W/m²), TOI-2046 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2046 is classified as a warm F-type star of spectral type F8 V with an effective photospheric temperature of 6,250 K, a radius of 1.21 R☉, a mass of 1.13 M☉, an estimated bolometric luminosity of 2.004 L☉. Stellar evolution modeling indicates an estimated stellar age of 0.45 Gyr and a metallicity of [Fe/H] = -0.06 dex (near-solar heavy-element abundance). From Earth, TOI-2046 shines at apparent V-band magnitude 11.552 (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-2046 |
| Spectral Type | F8 V |
| Effective Temp (Teff) | 6,250 K |
| Stellar Radius | 1.2100 R☉ |
| Stellar Mass | 1.1300 M☉ |
| Bolometric Luminosity | 2.004 L☉ |
| Metallicity [Fe/H] | -0.060 dex |
| Stellar Age | 0.450 Gyr |
| Apparent Magnitude | V: 11.552 · G: 11.413 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 1.497 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 83.6000° |
| Mean Bulk Density | 0.96 g/cm³ (75.3 km/s vesc) |
| Insolation Flux | 2643.6550 S⊕ (~3,598,014 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 944.800 LY (289.668 pc) |