TOI-1062 b
Astrophysical Synthesis & Habitability Characterization
TOI-1062 b is a confirmed sub-neptune exoplanet orbiting the star TOI-1062, located approximately 268 light-years (82.17 parsecs) from the Solar System. First announced in 2021 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.0611% across the stellar disk), this world measures 2.265 Earth radii and has a measured mass of 10.15 Earth masses. Combining its mass and radius yields a mean bulk density of 4.82 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.98 g⊕ (19.42 m/s²), and an escape velocity of 23.7 km/s.
In its orbital architecture around TOI-1062, TOI-1062 b completes one full revolution every 4.113 Earth days at a semi-major axis of 0.052 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 137.5 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.177 carries the world between 0.0428 AU at periapsis and 0.0612 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1077 K (+804°C / +1479°F) and receiving 232.00 S⊕ (~315,752 W/m²), TOI-1062 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-1062 is classified as a solar-type yellow star of spectral type G9 V with an effective photospheric temperature of 5,328 K, a radius of 0.84 R☉, a mass of 0.94 M☉, an estimated bolometric luminosity of 0.51 L☉. Stellar evolution modeling indicates an estimated stellar age of 2.5 Gyr and a metallicity of [Fe/H] = 0.14 dex (metal-rich relative to the Sun). From Earth, TOI-1062 shines at apparent V-band magnitude 10.249 (faint and requiring research-grade or CCD telescopic photometry) in the Southern celestial hemisphere. The TOI-1062 system is a multi-planet architecture hosting 2 confirmed worlds, with TOI-1062 b sharing its stellar neighborhood alongside TOI-1062 c.
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-1062 |
| Spectral Type | G9 V |
| Effective Temp (Teff) | 5,328 K |
| Stellar Radius | 0.8400 R☉ |
| Stellar Mass | 0.9400 M☉ |
| Bolometric Luminosity | 0.51 L☉ |
| Metallicity [Fe/H] | 0.140 dex |
| Stellar Age | 2.500 Gyr |
| Apparent Magnitude | V: 10.249 · G: 10.001 |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.052000 AU |
| Orbital Period | 4.113 days |
| Mean Orbital Velocity | 137.5 km/s |
| Orbital Eccentricity (e) | 0.17700 |
| Orbital Inclination (i) | 85.9130° |
| Mean Bulk Density | 4.82 g/cm³ (23.7 km/s vesc) |
| Insolation Flux | 232.0000 S⊕ (~315,752 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 268.000 LY (82.173 pc) |