TOI-1516 b
Astrophysical Synthesis & Habitability Characterization
TOI-1516 b is a confirmed gas giant exoplanet orbiting the star TOI-1516, located approximately 805.8 light-years (247.05 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 1.5029% across the stellar disk), this world measures 15.244 Earth radii (1.36 Jupiter radii) and has a measured mass of 1004.338 Earth masses (3.16 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.56 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 4.32 g⊕ (42.36 m/s²), and an escape velocity of 90.8 km/s.
In its orbital architecture around TOI-1516, TOI-1516 b completes one full revolution every 2.056 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1839 K (+1566°C / +2851°F) and receiving 1,899.83 S⊕ (~2,585,669 W/m²), TOI-1516 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-1516 is classified as a warm F-type star of spectral type F8 V with an effective photospheric temperature of 6,520 K, a radius of 1.14 R☉, a mass of 1.14 M☉, an estimated bolometric luminosity of 2.107 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.82 Gyr and a metallicity of [Fe/H] = -0.05 dex (near-solar heavy-element abundance). From Earth, TOI-1516 shines at apparent V-band magnitude 10.858 (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-1516 |
| Spectral Type | F8 V |
| Effective Temp (Teff) | 6,520 K |
| Stellar Radius | 1.1400 R☉ |
| Stellar Mass | 1.1400 M☉ |
| Bolometric Luminosity | 2.107 L☉ |
| Metallicity [Fe/H] | -0.050 dex |
| Stellar Age | 4.820 Gyr |
| Apparent Magnitude | V: 10.858 · G: 10.716 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 2.056 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 90.0000° |
| Mean Bulk Density | 1.56 g/cm³ (90.8 km/s vesc) |
| Insolation Flux | 1899.8300 S⊕ (~2,585,669 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 805.800 LY (247.054 pc) |