Kepler-1692 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1692 b is a confirmed terrestrial exoplanet orbiting the star Kepler-1692, located approximately 1927.6 light-years (591.02 parsecs) from the Solar System. First announced in 2020 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0139% across the stellar disk), this world measures 1.112 Earth radii and has a measured mass of 1.42 Earth masses. Combining its mass and radius yields a mean bulk density of 5.69 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.15 g⊕ (11.28 m/s²), and an escape velocity of 12.6 km/s.
In its orbital architecture around Kepler-1692, Kepler-1692 b completes one full revolution every 5.96 Earth days at a semi-major axis of 0.0646 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 117.9 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 897 K (+624°C / +1155°F) and receiving 153.48 S⊕ (~208,886 W/m²), Kepler-1692 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1692 is classified as a stellar host with an effective photospheric temperature of 5,146 K, a radius of 0.8661 R☉, a mass of 0.87 M☉, an estimated bolometric luminosity of 0.472 L☉. Stellar evolution modeling indicates an estimated stellar age of 6.1 Gyr and a metallicity of [Fe/H] = 0.36 dex (metal-rich relative to the Sun). From Earth, Kepler-1692 shines at apparent V-band magnitude 14.674 (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-1692 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,146 K |
| Stellar Radius | 0.8661 R☉ |
| Stellar Mass | 0.8700 M☉ |
| Bolometric Luminosity | 0.472 L☉ |
| Metallicity [Fe/H] | 0.360 dex |
| Stellar Age | 6.100 Gyr |
| Apparent Magnitude | V: 14.674 · G: 14.505 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.064600 AU |
| Orbital Period | 5.96 days |
| Mean Orbital Velocity | 117.9 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.0300° |
| Mean Bulk Density | 5.69 g/cm³ (12.6 km/s vesc) |
| Insolation Flux | 153.4800 S⊕ (~208,886 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1927.600 LY (591.019 pc) |