Kepler-1456 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1456 b is a confirmed terrestrial exoplanet orbiting the star Kepler-1456, located approximately 1207.8 light-years (370.31 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0284% across the stellar disk), this world measures 1.14 Earth radii and has a measured mass of 1.55 Earth masses. Combining its mass and radius yields a mean bulk density of 5.77 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.19 g⊕ (11.67 m/s²), and an escape velocity of 13 km/s.
In its orbital architecture around Kepler-1456, Kepler-1456 b completes one full revolution every 18.137 Earth days at a semi-major axis of 0.1132 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 67.9 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 433 K (+160°C / +320°F) and receiving 8.23 S⊕ (~11,206 W/m²), Kepler-1456 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1456 is classified as a stellar host with an effective photospheric temperature of 4,231 K, a radius of 0.62 R☉, a mass of 0.64 M☉, an estimated bolometric luminosity of 0.111 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.72 Gyr and a metallicity of [Fe/H] = -0.09 dex (near-solar heavy-element abundance). From Earth, Kepler-1456 shines at apparent V-band magnitude 15.777 (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-1456 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,231 K |
| Stellar Radius | 0.6200 R☉ |
| Stellar Mass | 0.6400 M☉ |
| Bolometric Luminosity | 0.111 L☉ |
| Metallicity [Fe/H] | -0.090 dex |
| Stellar Age | 3.720 Gyr |
| Apparent Magnitude | V: 15.777 · G: 15.445 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.113200 AU |
| Orbital Period | 18.137 days |
| Mean Orbital Velocity | 67.9 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 86.1200° |
| Mean Bulk Density | 5.77 g/cm³ (13 km/s vesc) |
| Insolation Flux | 8.2340 S⊕ (~11,206 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1207.800 LY (370.312 pc) |