Kepler-414 c
Astrophysical Synthesis & Habitability Characterization
Kepler-414 c is a confirmed sub-neptune exoplanet orbiting the star Kepler-414, located approximately 1348.5 light-years (413.46 parsecs) from the Solar System. First announced in 2014 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0851% across the stellar disk), this world measures 3.01 Earth radii (0.27 Jupiter radii) and has a measured mass of 29.9 Earth masses. Combining its mass and radius yields a mean bulk density of 6.05 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 3.3 g⊕ (32.36 m/s²), and an escape velocity of 35.3 km/s.
In its orbital architecture around Kepler-414, Kepler-414 c completes one full revolution every 7.171 Earth days at a semi-major axis of 0.07195 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 109.2 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 890 K (+617°C / +1143°F) and receiving 137.09 S⊕ (~186,574 W/m²), Kepler-414 c orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-414 is classified as a stellar host with an effective photospheric temperature of 5,536 K, a radius of 0.946 R☉, a mass of 0.89 M☉, an estimated bolometric luminosity of 0.754 L☉. Stellar evolution modeling indicates an estimated stellar age of 1.55 Gyr and a metallicity of [Fe/H] = 0.18 dex (metal-rich relative to the Sun). From Earth, Kepler-414 shines at apparent V-band magnitude 13.378 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere. The Kepler-414 system is a multi-planet architecture hosting 2 confirmed worlds, with Kepler-414 c sharing its stellar neighborhood alongside Kepler-414 b.
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-414 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,536 K |
| Stellar Radius | 0.9460 R☉ |
| Stellar Mass | 0.8900 M☉ |
| Bolometric Luminosity | 0.754 L☉ |
| Metallicity [Fe/H] | 0.180 dex |
| Stellar Age | 1.550 Gyr |
| Apparent Magnitude | V: 13.378 · G: 13.321 |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.071950 AU |
| Orbital Period | 7.171 days |
| Mean Orbital Velocity | 109.2 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.4300° |
| Mean Bulk Density | 6.05 g/cm³ (35.3 km/s vesc) |
| Insolation Flux | 137.0860 S⊕ (~186,574 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1348.500 LY (413.460 pc) |