Kepler-1832 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1832 b is a confirmed terrestrial exoplanet orbiting the star Kepler-1832, located approximately 1585.7 light-years (486.17 parsecs) from the Solar System. First announced in 2021 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0243% across the stellar disk), this world measures 1.227 Earth radii and has a measured mass of 2.02 Earth masses. Combining its mass and radius yields a mean bulk density of 6.03 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.34 g⊕ (13.14 m/s²), and an escape velocity of 14.4 km/s.
In its orbital architecture around Kepler-1832, Kepler-1832 b completes one full revolution every 3.139 Earth days at a semi-major axis of 0.037 AU (an ultra-close orbit less than one-seventh of Mercury's 0.387 AU distance from the Sun, where strong stellar tidal forces typically induce synchronous rotation). Its mean orbital velocity is approximately 128.2 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.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1022 K (+749°C / +1380°F) and receiving 257.32 S⊕ (~350,213 W/m²), Kepler-1832 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1832 is classified as a stellar host with an effective photospheric temperature of 5,242 K, a radius of 0.722 R☉, a mass of 0.684 M☉, an estimated bolometric luminosity of 0.353 L☉. Stellar evolution modeling indicates an estimated stellar age of 14 Gyr and a metallicity of [Fe/H] = -0.54 dex (metal-poor relative to the Sun). From Earth, Kepler-1832 shines at apparent V-band magnitude 14.577 (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-1832 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,242 K |
| Stellar Radius | 0.7220 R☉ |
| Stellar Mass | 0.6840 M☉ |
| Bolometric Luminosity | 0.353 L☉ |
| Metallicity [Fe/H] | -0.540 dex |
| Stellar Age | 14.000 Gyr |
| Apparent Magnitude | V: 14.577 · G: 14.375 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.037000 AU |
| Orbital Period | 3.139 days |
| Mean Orbital Velocity | 128.2 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 88.1000° |
| Mean Bulk Density | 6.03 g/cm³ (14.4 km/s vesc) |
| Insolation Flux | 257.3200 S⊕ (~350,213 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1585.700 LY (486.174 pc) |