TOI-1011 b
Astrophysical Synthesis & Habitability Characterization
TOI-1011 b is a confirmed super-earth exoplanet orbiting the star TOI-1011, located approximately 171.6 light-years (52.62 parsecs) from the Solar System. First announced in 2025 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.0209% across the stellar disk), this world measures 1.45 Earth radii and has a measured mass of 4.04 Earth masses. Combining its mass and radius yields a mean bulk density of 7.31 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 1.92 g⊕ (18.83 m/s²), and an escape velocity of 18.7 km/s.
In its orbital architecture around TOI-1011, TOI-1011 b completes one full revolution every 2.47 Earth days. The orbit is modeled as circular (e = 0.00), maintaining a constant stellar distance throughout its year.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1364 K (+1091°C / +1996°F) and receiving 575.60 S⊕ (~783,388 W/m²), TOI-1011 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-1011 is classified as a stellar host with an effective photospheric temperature of 5,475 K, a radius of 0.92 R☉, a mass of 0.91 M☉, an estimated bolometric luminosity of 0.682 L☉. Stellar evolution modeling indicates a metallicity of [Fe/H] = 0.03 dex (near-solar heavy-element abundance). From Earth, TOI-1011 shines at apparent V-band magnitude 8.94 (accessible to binoculars and small amateur telescopes) 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-1011 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,475 K |
| Stellar Radius | 0.9200 R☉ |
| Stellar Mass | 0.9100 M☉ |
| Bolometric Luminosity | 0.682 L☉ |
| Metallicity [Fe/H] | 0.030 dex |
| Stellar Age | — |
| Apparent Magnitude | V: 8.940 · G: 8.729 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 2.47 days |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 7.31 g/cm³ (18.7 km/s vesc) |
| Insolation Flux | 575.5970 S⊕ (~783,388 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 171.600 LY (52.620 pc) |