Kepler-1100 b

Astrophysical Synthesis & Habitability Characterization

Kepler-1100 b is a confirmed super-earth exoplanet orbiting the star Kepler-1100, located approximately 2262.3 light-years (693.62 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0143% across the stellar disk), this world measures 1.75 Earth radii and has a measured mass of 3.71 Earth masses. Combining its mass and radius yields a mean bulk density of 3.82 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.21 g⊕ (11.87 m/s²), and an escape velocity of 16.3 km/s.

In its orbital architecture around Kepler-1100, Kepler-1100 b completes one full revolution every 6.422 Earth days at a semi-major axis of 0.06745 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 114.3 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 1000 K (+727°C / +1341°F) and receiving 238.51 S⊕ (~324,609 W/m²), Kepler-1100 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.

The host star Kepler-1100 is classified as a stellar host with an effective photospheric temperature of 6,247 K, a radius of 1.34 R☉, a mass of 1.21 M☉, an estimated bolometric luminosity of 2.453 L☉. Stellar evolution modeling indicates an estimated stellar age of 2.69 Gyr and a metallicity of [Fe/H] = 0.05 dex (near-solar heavy-element abundance). From Earth, Kepler-1100 shines at apparent V-band magnitude 13.952 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere.

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