TOI-1062 c
Astrophysical Synthesis & Habitability Characterization
TOI-1062 c 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 La Silla Observatory using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 3.1 Earth radii (0.28 Jupiter radii) and has a measured mass of 9.78 Earth masses. Combining its mass and radius yields a mean bulk density of 1.81 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 1.02 g⊕ (10 m/s²), and an escape velocity of 19.9 km/s.
In its orbital architecture around TOI-1062, TOI-1062 c completes one full revolution every 7.972 Earth days at a semi-major axis of 0.08 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 109.2 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.14 carries the world between 0.0688 AU at periapsis and 0.0912 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 859 K (+586°C / +1087°F) and receiving 95.00 S⊕ (~129,295 W/m²), TOI-1062 c 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 c sharing its stellar neighborhood alongside TOI-1062 b.
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: La Silla Observatory · 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) | 0.080000 AU |
| Orbital Period | 7.972 days |
| Mean Orbital Velocity | 109.2 km/s |
| Orbital Eccentricity (e) | 0.14000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 1.81 g/cm³ (19.9 km/s vesc) |
| Insolation Flux | 95.0000 S⊕ (~129,295 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 268.000 LY (82.173 pc) |