Kepler-1430 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1430 b is a confirmed terrestrial exoplanet orbiting the star Kepler-1430, located approximately 2855.6 light-years (875.52 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0226% across the stellar disk), this world measures 1.18 Earth radii and has a measured mass of 1.76 Earth masses. Combining its mass and radius yields a mean bulk density of 5.91 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.26 g⊕ (12.36 m/s²), and an escape velocity of 13.7 km/s.
In its orbital architecture around Kepler-1430, Kepler-1430 b completes one full revolution every 2.461 Earth days at a semi-major axis of 0.0304 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 134.4 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 969 K (+696°C / +1285°F) and receiving 208.54 S⊕ (~283,823 W/m²), Kepler-1430 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1430 is classified as a stellar host with an effective photospheric temperature of 4,796 K, a radius of 0.72 R☉, a mass of 0.77 M☉, an estimated bolometric luminosity of 0.246 L☉. Stellar evolution modeling indicates an estimated stellar age of 2.09 Gyr and a metallicity of [Fe/H] = -0.03 dex (near-solar heavy-element abundance). From Earth, Kepler-1430 shines at apparent V-band magnitude 15.567 (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-1430 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,796 K |
| Stellar Radius | 0.7200 R☉ |
| Stellar Mass | 0.7700 M☉ |
| Bolometric Luminosity | 0.246 L☉ |
| Metallicity [Fe/H] | -0.030 dex |
| Stellar Age | 2.090 Gyr |
| Apparent Magnitude | V: 15.567 · G: 15.282 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.030400 AU |
| Orbital Period | 2.461 days |
| Mean Orbital Velocity | 134.4 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.7100° |
| Mean Bulk Density | 5.91 g/cm³ (13.7 km/s vesc) |
| Insolation Flux | 208.5400 S⊕ (~283,823 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2855.600 LY (875.523 pc) |