TOI-1750 b
Astrophysical Synthesis & Habitability Characterization
TOI-1750 b is a confirmed sub-neptune exoplanet orbiting the star TOI-1750, located approximately 529.9 light-years (162.46 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 0.1106% across the stellar disk), this world measures 2.789 Earth radii and has a measured mass of 8.19 Earth masses. Combining its mass and radius yields a mean bulk density of 2.08 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.05 g⊕ (10.3 m/s²), and an escape velocity of 19.2 km/s.
In its orbital architecture around TOI-1750, TOI-1750 b completes one full revolution every 11.337 Earth days.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 613 K (+340°C / +644°F) and receiving 33.35 S⊕ (~45,392 W/m²), TOI-1750 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-1750 is classified as a stellar host with an effective photospheric temperature of 4,684 K, a radius of 0.7687 R☉, a mass of 0.767 M☉, an estimated bolometric luminosity of 0.255 L☉. From Earth, TOI-1750 shines at apparent V-band magnitude 12.645 (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-1750 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,684 K |
| Stellar Radius | 0.7687 R☉ |
| Stellar Mass | 0.7670 M☉ |
| Bolometric Luminosity | 0.255 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 12.645 · G: 12.330 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 11.337 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 88.9563° |
| Mean Bulk Density | 2.08 g/cm³ (19.2 km/s vesc) |
| Insolation Flux | 33.3520 S⊕ (~45,392 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 529.900 LY (162.460 pc) |