Kepler-1683 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1683 b is a confirmed super-earth exoplanet orbiting the star Kepler-1683, located approximately 2391.2 light-years (733.14 parsecs) from the Solar System. First announced in 2020 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0365% across the stellar disk), this world measures 1.875 Earth radii and has a measured mass of 4.17 Earth masses. Combining its mass and radius yields a mean bulk density of 3.49 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.19 g⊕ (11.67 m/s²), and an escape velocity of 16.7 km/s.
In its orbital architecture around Kepler-1683, Kepler-1683 b completes one full revolution every 15.034 Earth days at a semi-major axis of 0.1182 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 669 K (+396°C / +745°F) and receiving 47.32 S⊕ (~64,403 W/m²), Kepler-1683 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1683 is classified as a stellar host with an effective photospheric temperature of 5,429 K, a radius of 0.9003 R☉, a mass of 0.95 M☉, an estimated bolometric luminosity of 0.632 L☉. Stellar evolution modeling indicates an estimated stellar age of 13.6 Gyr and a metallicity of [Fe/H] = 0.16 dex (metal-rich relative to the Sun). From Earth, Kepler-1683 shines at apparent V-band magnitude 14.962 (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-1683 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,429 K |
| Stellar Radius | 0.9003 R☉ |
| Stellar Mass | 0.9500 M☉ |
| Bolometric Luminosity | 0.632 L☉ |
| Metallicity [Fe/H] | 0.160 dex |
| Stellar Age | 13.600 Gyr |
| Apparent Magnitude | V: 14.962 · G: 14.843 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.118200 AU |
| Orbital Period | 15.034 days |
| Mean Orbital Velocity | 85.5 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.9800° |
| Mean Bulk Density | 3.49 g/cm³ (16.7 km/s vesc) |
| Insolation Flux | 47.3200 S⊕ (~64,403 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2391.200 LY (733.143 pc) |