Kepler-1992 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1992 b is a confirmed terrestrial exoplanet orbiting the star Kepler-1992, located approximately 1738.3 light-years (532.96 parsecs) from the Solar System. First announced in 2023 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0098% across the stellar disk), this world measures 0.91 Earth radii and has a measured mass of 0.693 Earth masses. Combining its mass and radius yields a mean bulk density of 5.07 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 0.84 g⊕ (8.24 m/s²), and an escape velocity of 9.8 km/s.
In its orbital architecture around Kepler-1992, Kepler-1992 b completes one full revolution every 15.611 Earth days at a semi-major axis of 0.1169 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 81.5 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 637 K (+364°C / +687°F) and receiving 38.99 S⊕ (~53,065 W/m²), Kepler-1992 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1992 is classified as a stellar host with an effective photospheric temperature of 5,383 K, a radius of 0.842 R☉, a mass of 0.874 M☉, an estimated bolometric luminosity of 0.534 L☉. Stellar evolution modeling indicates an estimated stellar age of 13.49 Gyr and a metallicity of [Fe/H] = 0 dex (near-solar heavy-element abundance). From Earth, Kepler-1992 shines at apparent V-band magnitude 13.79 (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-1992 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,383 K |
| Stellar Radius | 0.8420 R☉ |
| Stellar Mass | 0.8740 M☉ |
| Bolometric Luminosity | 0.534 L☉ |
| Metallicity [Fe/H] | 0.000 dex |
| Stellar Age | 13.490 Gyr |
| Apparent Magnitude | V: 13.790 · G: 13.554 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.116900 AU |
| Orbital Period | 15.611 days |
| Mean Orbital Velocity | 81.5 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.0300° |
| Mean Bulk Density | 5.07 g/cm³ (9.8 km/s vesc) |
| Insolation Flux | 38.9900 S⊕ (~53,065 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1738.300 LY (532.955 pc) |