TOI-5007 b
Astrophysical Synthesis & Habitability Characterization
TOI-5007 b is a confirmed gas giant exoplanet orbiting the star TOI-5007, located approximately 663.2 light-years (203.35 parsecs) from the Solar System. First announced in 2026 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 2.3952% across the stellar disk), this world measures 11.074 Earth radii (0.99 Jupiter radii) and has a measured mass of 211.038 Earth masses (0.66 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.86 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 1.72 g⊕ (16.87 m/s²), and an escape velocity of 48.8 km/s.
In its orbital architecture around TOI-5007, TOI-5007 b completes one full revolution every 2.543 Earth days at a semi-major axis of 0.0307 AU (an ultra-close orbit less than one-seventh of Mercury's 0.387 AU distance from the Sun, where strong stellar tidal forces typically induce synchronous rotation). Its mean orbital velocity is approximately 131.3 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.074 carries the world between 0.0284 AU at periapsis and 0.033 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 774 K (+501°C / +934°F) and receiving 85.30 S⊕ (~116,093 W/m²), TOI-5007 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-5007 is classified as a low-mass red dwarf of spectral type M1±0.5 with an effective photospheric temperature of 3,793 K, a radius of 0.656 R☉, a mass of 0.632 M☉, an estimated bolometric luminosity of 0.08 L☉. Stellar evolution modeling indicates an estimated stellar age of 4 Gyr and a metallicity of [Fe/H] = 0.43 dex (metal-rich relative to the Sun). From Earth, TOI-5007 shines at apparent V-band magnitude 15.327 (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-5007 |
| Spectral Type | M1±0.5 |
| Effective Temp (Teff) | 3,793 K |
| Stellar Radius | 0.6560 R☉ |
| Stellar Mass | 0.6320 M☉ |
| Bolometric Luminosity | 0.08 L☉ |
| Metallicity [Fe/H] | 0.430 dex |
| Stellar Age | 4.000 Gyr |
| Apparent Magnitude | V: 15.327 · G: 14.652 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.030700 AU |
| Orbital Period | 2.543 days |
| Mean Orbital Velocity | 131.3 km/s |
| Orbital Eccentricity (e) | 0.07400 |
| Orbital Inclination (i) | 84.8600° |
| Mean Bulk Density | 0.86 g/cm³ (48.8 km/s vesc) |
| Insolation Flux | 85.3000 S⊕ (~116,093 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 663.200 LY (203.352 pc) |