Kepler-1814 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1814 b is a confirmed sub-neptune exoplanet orbiting the star Kepler-1814, located approximately 2369 light-years (726.35 parsecs) from the Solar System. First announced in 2021 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0697% across the stellar disk), this world measures 2.37 Earth radii and has a measured mass of 6.21 Earth masses. Combining its mass and radius yields a mean bulk density of 2.57 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.11 g⊕ (10.89 m/s²), and an escape velocity of 18.1 km/s.
In its orbital architecture around Kepler-1814, Kepler-1814 b completes one full revolution every 2.935 Earth days at a semi-major axis of 0.03765 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 139.5 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 216.90 S⊕ (~295,201 W/m²), Kepler-1814 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1814 is classified as a stellar host with an effective photospheric temperature of 4,922 K, a radius of 0.823 R☉, a mass of 0.79 M☉, an estimated bolometric luminosity of 0.357 L☉. Stellar evolution modeling indicates an estimated stellar age of 2.82 Gyr and a metallicity of [Fe/H] = 0.2 dex (metal-rich relative to the Sun). From Earth, Kepler-1814 shines at apparent V-band magnitude 15.814 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere. The Kepler-1814 system is a multi-planet architecture hosting 2 confirmed worlds, with Kepler-1814 b sharing its stellar neighborhood alongside Kepler-1814 c.
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-1814 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,922 K |
| Stellar Radius | 0.8230 R☉ |
| Stellar Mass | 0.7900 M☉ |
| Bolometric Luminosity | 0.357 L☉ |
| Metallicity [Fe/H] | 0.200 dex |
| Stellar Age | 2.820 Gyr |
| Apparent Magnitude | V: 15.814 · G: 15.607 |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.037650 AU |
| Orbital Period | 2.935 days |
| Mean Orbital Velocity | 139.5 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 84.2900° |
| Mean Bulk Density | 2.57 g/cm³ (18.1 km/s vesc) |
| Insolation Flux | 216.9000 S⊕ (~295,201 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2369.000 LY (726.346 pc) |