Kepler-1568 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1568 b is a confirmed super-earth exoplanet orbiting the star Kepler-1568, located approximately 2988.6 light-years (916.31 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.01% across the stellar disk), this world measures 1.3 Earth radii and has a measured mass of 2.24 Earth masses. Combining its mass and radius yields a mean bulk density of 5.62 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.33 g⊕ (13.04 m/s²), and an escape velocity of 14.7 km/s.
In its orbital architecture around Kepler-1568, Kepler-1568 b completes one full revolution every 20.925 Earth days at a semi-major axis of 0.15157 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 78.8 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 729 K (+456°C / +853°F) and receiving 72.57 S⊕ (~98,765 W/m²), Kepler-1568 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1568 is classified as a stellar host with an effective photospheric temperature of 5,956 K, a radius of 1.19 R☉, a mass of 1.09 M☉, an estimated bolometric luminosity of 1.599 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.57 Gyr and a metallicity of [Fe/H] = 0.09 dex (metal-rich relative to the Sun). From Earth, Kepler-1568 shines at apparent V-band magnitude 14.138 (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-1568 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,956 K |
| Stellar Radius | 1.1900 R☉ |
| Stellar Mass | 1.0900 M☉ |
| Bolometric Luminosity | 1.599 L☉ |
| Metallicity [Fe/H] | 0.090 dex |
| Stellar Age | 4.570 Gyr |
| Apparent Magnitude | V: 14.138 · G: 13.945 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.151570 AU |
| Orbital Period | 20.925 days |
| Mean Orbital Velocity | 78.8 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.5100° |
| Mean Bulk Density | 5.62 g/cm³ (14.7 km/s vesc) |
| Insolation Flux | 72.5680 S⊕ (~98,765 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2988.600 LY (916.313 pc) |