Kepler-1930 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1930 b is a confirmed super-earth exoplanet orbiting the star Kepler-1930, located approximately 899.2 light-years (275.69 parsecs) from the Solar System. First announced in 2021 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0276% across the stellar disk), this world measures 1.53 Earth radii and has a measured mass of 2.95 Earth masses. Combining its mass and radius yields a mean bulk density of 4.54 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.26 g⊕ (12.36 m/s²), and an escape velocity of 15.5 km/s.
In its orbital architecture around Kepler-1930, Kepler-1930 b completes one full revolution every 13.027 Earth days at a semi-major axis of 0.10233 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 85.5 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 643 K (+370°C / +698°F) and receiving 31.60 S⊕ (~43,008 W/m²), Kepler-1930 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1930 is classified as a stellar host with an effective photospheric temperature of 5,083 K, a radius of 0.844 R☉, a mass of 0.844 M☉, an estimated bolometric luminosity of 0.427 L☉. Stellar evolution modeling indicates an estimated stellar age of 0.62 Gyr and a metallicity of [Fe/H] = 0.22 dex (metal-rich relative to the Sun). From Earth, Kepler-1930 shines at apparent V-band magnitude 13.447 (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-1930 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,083 K |
| Stellar Radius | 0.8440 R☉ |
| Stellar Mass | 0.8440 M☉ |
| Bolometric Luminosity | 0.427 L☉ |
| Metallicity [Fe/H] | 0.220 dex |
| Stellar Age | 0.620 Gyr |
| Apparent Magnitude | V: 13.447 · G: 13.375 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.102330 AU |
| Orbital Period | 13.027 days |
| Mean Orbital Velocity | 85.5 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.0100° |
| Mean Bulk Density | 4.54 g/cm³ (15.5 km/s vesc) |
| Insolation Flux | 31.6000 S⊕ (~43,008 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 899.200 LY (275.694 pc) |