Kepler-1119 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1119 b is a confirmed super-earth exoplanet orbiting the star Kepler-1119, located approximately 5731.3 light-years (1757.23 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0226% across the stellar disk), this world measures 1.92 Earth radii and has a measured mass of 4.35 Earth masses. Combining its mass and radius yields a mean bulk density of 3.39 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.18 g⊕ (11.57 m/s²), and an escape velocity of 16.8 km/s.
In its orbital architecture around Kepler-1119, Kepler-1119 b completes one full revolution every 8.327 Earth days at a semi-major axis of 0.0812 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 106.1 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 938 K (+665°C / +1229°F) and receiving 182.69 S⊕ (~248,641 W/m²), Kepler-1119 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1119 is classified as a stellar host with an effective photospheric temperature of 6,083 K, a radius of 1.17 R☉, a mass of 1.11 M☉, an estimated bolometric luminosity of 1.682 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.09 Gyr and a metallicity of [Fe/H] = 0.03 dex (near-solar heavy-element abundance). From Earth, Kepler-1119 shines at apparent V-band magnitude 15.296 (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-1119 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,083 K |
| Stellar Radius | 1.1700 R☉ |
| Stellar Mass | 1.1100 M☉ |
| Bolometric Luminosity | 1.682 L☉ |
| Metallicity [Fe/H] | 0.030 dex |
| Stellar Age | 3.090 Gyr |
| Apparent Magnitude | V: 15.296 · G: 15.067 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.081200 AU |
| Orbital Period | 8.327 days |
| Mean Orbital Velocity | 106.1 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 84.0800° |
| Mean Bulk Density | 3.39 g/cm³ (16.8 km/s vesc) |
| Insolation Flux | 182.6900 S⊕ (~248,641 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 5731.300 LY (1757.230 pc) |