TOI-2071 b
Astrophysical Synthesis & Habitability Characterization
TOI-2071 b is a confirmed sub-neptune exoplanet orbiting the star TOI-2071, located approximately 754.4 light-years (231.31 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 0.055% across the stellar disk), this world measures 2.565 Earth radii and has a measured mass of 7.1 Earth masses. Combining its mass and radius yields a mean bulk density of 2.32 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.08 g⊕ (10.59 m/s²), and an escape velocity of 18.6 km/s.
In its orbital architecture around TOI-2071, TOI-2071 b completes one full revolution every 5.674 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1029 K (+756°C / +1393°F) and receiving 265.30 S⊕ (~361,077 W/m²), TOI-2071 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-2071 is classified as a stellar host with an effective photospheric temperature of 5,755 K, a radius of 1.0029 R☉, a mass of 1.063 M☉, an estimated bolometric luminosity of 0.99 L☉. Stellar evolution modeling indicates a metallicity of [Fe/H] = 0.048 dex (near-solar heavy-element abundance). From Earth, TOI-2071 shines at apparent V-band magnitude 11.541 (faint and requiring research-grade or CCD telescopic photometry) 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-2071 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,755 K |
| Stellar Radius | 1.0029 R☉ |
| Stellar Mass | 1.0630 M☉ |
| Bolometric Luminosity | 0.99 L☉ |
| Metallicity [Fe/H] | 0.048 dex |
| Stellar Age | — |
| Apparent Magnitude | V: 11.541 · G: 11.461 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 5.674 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 88.3086° |
| Mean Bulk Density | 2.32 g/cm³ (18.6 km/s vesc) |
| Insolation Flux | 265.3025 S⊕ (~361,077 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 754.400 LY (231.311 pc) |