Kepler-1750 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1750 b is a confirmed gas giant exoplanet orbiting the star Kepler-1750, located approximately 4883.6 light-years (1497.33 parsecs) from the Solar System. First announced in 2021 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.3227% across the stellar disk), this world measures 6.004 Earth radii (0.54 Jupiter radii) and has a measured mass of 30.1 Earth masses (0.09 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.77 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 0.83 g⊕ (8.14 m/s²), and an escape velocity of 25 km/s.
In its orbital architecture around Kepler-1750, Kepler-1750 b completes one full revolution every 205.912 Earth days at a semi-major axis of 0.6785 AU (situated at an orbital separation between Mercury's 0.39 AU and Venus's 0.72 AU). Its mean orbital velocity is approximately 35.8 km/s (compared to Earth's 29.8 km/s). The orbit is modeled as circular (e = 0.00), maintaining a constant stellar distance throughout its year.
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 6.004 R⊕, Kepler-1750 b exceeds the empirical ~1.8–2.2 R⊕ Fulton radius valley threshold, indicating a substantial hydrogen-helium or supercritical volatile envelope without a conventional solid terrestrial surface.
The host star Kepler-1750 is classified as a stellar host with an effective photospheric temperature of 5,644 K, a radius of 0.969 R☉, a mass of 0.981 M☉, an estimated bolometric luminosity of 0.855 L☉. Stellar evolution modeling indicates an estimated stellar age of 0.5 Gyr and a metallicity of [Fe/H] = 0.14 dex (metal-rich relative to the Sun). From Earth, Kepler-1750 shines at apparent V-band magnitude 15.702 (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: Kepler · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | Kepler-1750 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,644 K |
| Stellar Radius | 0.9690 R☉ |
| Stellar Mass | 0.9810 M☉ |
| Bolometric Luminosity | 0.855 L☉ |
| Metallicity [Fe/H] | 0.140 dex |
| Stellar Age | 0.500 Gyr |
| Apparent Magnitude | V: 15.702 · G: 15.534 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.678500 AU |
| Orbital Period | 205.912 days |
| Mean Orbital Velocity | 35.8 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.9300° |
| Mean Bulk Density | 0.77 g/cm³ (25 km/s vesc) |
| Insolation Flux | 1.8500 S⊕ (~2,518 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 4883.600 LY (1497.330 pc) |