Kepler-1912 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1912 b is a confirmed super-earth exoplanet orbiting the star Kepler-1912, located approximately 968.7 light-years (297.02 parsecs) from the Solar System. First announced in 2021 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0167% across the stellar disk), this world measures 1.357 Earth radii and has a measured mass of 2.41 Earth masses. Combining its mass and radius yields a mean bulk density of 5.32 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.31 g⊕ (12.85 m/s²), and an escape velocity of 14.9 km/s.
In its orbital architecture around Kepler-1912, Kepler-1912 b completes one full revolution every 6.059 Earth days at a semi-major axis of 0.06489 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 116.5 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 976 K (+703°C / +1297°F) and receiving 201.80 S⊕ (~274,650 W/m²), Kepler-1912 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1912 is classified as a stellar host with an effective photospheric temperature of 5,734 K, a radius of 0.962 R☉, a mass of 0.977 M☉, an estimated bolometric luminosity of 0.898 L☉. Stellar evolution modeling indicates an estimated stellar age of 2.24 Gyr and a metallicity of [Fe/H] = 0.04 dex (near-solar heavy-element abundance). From Earth, Kepler-1912 shines at apparent V-band magnitude 12.36 (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-1912 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,734 K |
| Stellar Radius | 0.9620 R☉ |
| Stellar Mass | 0.9770 M☉ |
| Bolometric Luminosity | 0.898 L☉ |
| Metallicity [Fe/H] | 0.040 dex |
| Stellar Age | 2.240 Gyr |
| Apparent Magnitude | V: 12.360 · G: 12.239 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.064890 AU |
| Orbital Period | 6.059 days |
| Mean Orbital Velocity | 116.5 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.1900° |
| Mean Bulk Density | 5.32 g/cm³ (14.9 km/s vesc) |
| Insolation Flux | 201.8000 S⊕ (~274,650 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 968.700 LY (297.017 pc) |