TOI-2010 b
Astrophysical Synthesis & Habitability Characterization
TOI-2010 b is a confirmed gas giant exoplanet orbiting the star TOI-2010, located approximately 356.1 light-years (109.19 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 1.0076% across the stellar disk), this world measures 11.814 Earth radii (1.05 Jupiter radii) and has a measured mass of 408.727 Earth masses (1.29 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.37 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.93 g⊕ (28.73 m/s²), and an escape velocity of 65.8 km/s.
In its orbital architecture around TOI-2010, TOI-2010 b completes one full revolution every 141.834 Earth days at a semi-major axis of 0.5516 AU (situated at an orbital separation between Mercury's 0.39 AU and Venus's 0.72 AU). Its mean orbital velocity is approximately 42.3 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.212 carries the world between 0.4347 AU at periapsis and 0.6685 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 400 K (+127°C / +261°F) and receiving 4.09 S⊕ (~5,566 W/m²), TOI-2010 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2010 is classified as a warm F-type star of spectral type F0 with an effective photospheric temperature of 5,929 K, a radius of 1.079 R☉, a mass of 1.112 M☉, an estimated bolometric luminosity of 1.291 L☉. Stellar evolution modeling indicates an estimated stellar age of 1.9 Gyr and a metallicity of [Fe/H] = 0.168 dex (metal-rich relative to the Sun). From Earth, TOI-2010 shines at apparent V-band magnitude 9.849 (accessible to binoculars and small amateur telescopes) 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-2010 |
| Spectral Type | F0 |
| Effective Temp (Teff) | 5,929 K |
| Stellar Radius | 1.0790 R☉ |
| Stellar Mass | 1.1120 M☉ |
| Bolometric Luminosity | 1.291 L☉ |
| Metallicity [Fe/H] | 0.168 dex |
| Stellar Age | 1.900 Gyr |
| Apparent Magnitude | V: 9.849 · G: 9.696 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.551600 AU |
| Orbital Period | 141.834 days |
| Mean Orbital Velocity | 42.3 km/s |
| Orbital Eccentricity (e) | 0.21200 |
| Orbital Inclination (i) | 89.9030° |
| Mean Bulk Density | 1.37 g/cm³ (65.8 km/s vesc) |
| Insolation Flux | 4.0900 S⊕ (~5,566 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 356.100 LY (109.190 pc) |