Kepler-1713 b

Astrophysical Synthesis & Habitability Characterization

Kepler-1713 b is a confirmed super-earth exoplanet orbiting the star Kepler-1713, located approximately 963.1 light-years (295.29 parsecs) from the Solar System. First announced in 2021 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0116% across the stellar disk), this world measures 1.717 Earth radii and has a measured mass of 3.59 Earth masses. Combining its mass and radius yields a mean bulk density of 3.91 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.22 g⊕ (11.96 m/s²), and an escape velocity of 16.2 km/s.

In its orbital architecture around Kepler-1713, Kepler-1713 b completes one full revolution every 18.012 Earth days at a semi-major axis of 0.14185 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 85.7 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 900 K (+627°C / +1161°F) and receiving 144.30 S⊕ (~196,392 W/m²), Kepler-1713 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.

The host star Kepler-1713 is classified as a stellar host with an effective photospheric temperature of 6,477 K, a radius of 1.459 R☉, a mass of 1.3 M☉, an estimated bolometric luminosity of 3.361 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.72 Gyr and a metallicity of [Fe/H] = 0.1 dex (metal-rich relative to the Sun). From Earth, Kepler-1713 shines at apparent V-band magnitude 11.065 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere.

Discovery Facility: Kepler · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).