Kepler-1512 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1512 b is a confirmed terrestrial exoplanet orbiting the star Kepler-1512, located approximately 528.4 light-years (162 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0261% 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-1512, Kepler-1512 b completes one full revolution every 20.36 Earth days at a semi-major axis of 0.13693 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 73.2 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.
✓ Classified as a Temperate Habitable Zone Candidate.
With an estimated equilibrium temperature of 322 K (+49°C / +120°F) and an incident stellar irradiance of 1.60 S⊕ (~2,178 W/m²), Kepler-1512 b orbits within the empirical circumstellar habitable zone where a rocky surface under sufficient atmospheric pressure can maintain liquid surface water.
The host star Kepler-1512 is classified as a stellar host with an effective photospheric temperature of 4,372 K, a radius of 0.67 R☉, a mass of 0.73 M☉, an estimated bolometric luminosity of 0.147 L☉. Stellar evolution modeling indicates an estimated stellar age of 1.78 Gyr and a metallicity of [Fe/H] = 0.2 dex (metal-rich relative to the Sun). From Earth, Kepler-1512 shines at apparent V-band magnitude 13.451 (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-1512 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,372 K |
| Stellar Radius | 0.6700 R☉ |
| Stellar Mass | 0.7300 M☉ |
| Bolometric Luminosity | 0.147 L☉ |
| Metallicity [Fe/H] | 0.200 dex |
| Stellar Age | 1.780 Gyr |
| Apparent Magnitude | V: 13.451 · G: 13.263 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.136930 AU |
| Orbital Period | 20.36 days |
| Mean Orbital Velocity | 73.2 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.4500° |
| Mean Bulk Density | 5.91 g/cm³ (13.7 km/s vesc) |
| Insolation Flux | 1.6000 S⊕ (~2,178 W/m²) |
| Habitable Zone Status | ★ Temperate Zone |
| Celestial Distance | 528.400 LY (162.000 pc) |