Kepler-1005 b

Astrophysical Synthesis & Habitability Characterization

Kepler-1005 b is a confirmed super-earth exoplanet orbiting the star Kepler-1005, located approximately 1851.9 light-years (567.81 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0168% across the stellar disk), this world measures 1.5 Earth radii and has a measured mass of 2.86 Earth masses. Combining its mass and radius yields a mean bulk density of 4.67 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.27 g⊕ (12.45 m/s²), and an escape velocity of 15.4 km/s.

In its orbital architecture around Kepler-1005, Kepler-1005 b completes one full revolution every 6.498 Earth days at a semi-major axis of 0.06717 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 112.5 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 1026 K (+753°C / +1387°F) and receiving 301.33 S⊕ (~410,109 W/m²), Kepler-1005 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.

The host star Kepler-1005 is classified as a stellar host with an effective photospheric temperature of 5,782 K, a radius of 1.06 R☉, a mass of 1 M☉, an estimated bolometric luminosity of 1.127 L☉. Stellar evolution modeling indicates an estimated stellar age of 6.17 Gyr and a metallicity of [Fe/H] = 0.02 dex (near-solar heavy-element abundance). From Earth, Kepler-1005 shines at apparent V-band magnitude 13.371 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere.

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