TOI-3023 b
Astrophysical Synthesis & Habitability Characterization
TOI-3023 b is a confirmed gas giant exoplanet orbiting the star TOI-3023, located approximately 1271.7 light-years (389.92 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 0.8157% across the stellar disk), this world measures 16.432 Earth radii (1.47 Jupiter radii) and has a measured mass of 197.054 Earth masses (0.62 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.24 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.73 g⊕ (7.16 m/s²), and an escape velocity of 38.7 km/s.
In its orbital architecture around TOI-3023, TOI-3023 b completes one full revolution every 3.901 Earth days at a semi-major axis of 0.0505 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 140.8 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 1596 K (+1323°C / +2413°F) and receiving 1,084.00 S⊕ (~1,475,324 W/m²), TOI-3023 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-3023 is classified as a stellar host with an effective photospheric temperature of 5,760 K, a radius of 1.668 R☉, a mass of 1.12 M☉, an estimated bolometric luminosity of 2.748 L☉. Stellar evolution modeling indicates an estimated stellar age of 7 Gyr and a metallicity of [Fe/H] = 0.085 dex (metal-rich relative to the Sun). From Earth, TOI-3023 shines at apparent V-band magnitude 12.252 (faint and requiring research-grade or CCD telescopic photometry) in the Southern 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-3023 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,760 K |
| Stellar Radius | 1.6680 R☉ |
| Stellar Mass | 1.1200 M☉ |
| Bolometric Luminosity | 2.748 L☉ |
| Metallicity [Fe/H] | 0.085 dex |
| Stellar Age | 7.000 Gyr |
| Apparent Magnitude | V: 12.252 · G: 12.034 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.050500 AU |
| Orbital Period | 3.901 days |
| Mean Orbital Velocity | 140.8 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 88.9000° |
| Mean Bulk Density | 0.24 g/cm³ (38.7 km/s vesc) |
| Insolation Flux | 1084.0000 S⊕ (~1,475,324 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1271.700 LY (389.916 pc) |