Kepler-1834 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1834 b is a confirmed super-earth exoplanet orbiting the star Kepler-1834, located approximately 1632.1 light-years (500.4 parsecs) from the Solar System. First announced in 2021 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0288% across the stellar disk), this world measures 1.459 Earth radii and has a measured mass of 2.73 Earth masses. Combining its mass and radius yields a mean bulk density of 4.85 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.28 g⊕ (12.55 m/s²), and an escape velocity of 15.3 km/s.
In its orbital architecture around Kepler-1834, Kepler-1834 b completes one full revolution every 4.603 Earth days at a semi-major axis of 0.04911 AU (an ultra-close orbit less than one-seventh of Mercury's 0.387 AU distance from the Sun, where strong stellar tidal forces typically induce synchronous rotation). Its mean orbital velocity is approximately 116.1 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 848 K (+575°C / +1067°F) and receiving 105.20 S⊕ (~143,177 W/m²), Kepler-1834 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1834 is classified as a stellar host with an effective photospheric temperature of 4,821 K, a radius of 0.788 R☉, a mass of 0.765 M☉, an estimated bolometric luminosity of 0.301 L☉. Stellar evolution modeling indicates an estimated stellar age of 12.2 Gyr and a metallicity of [Fe/H] = 0.16 dex (metal-rich relative to the Sun). From Earth, Kepler-1834 shines at apparent V-band magnitude 15.18 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere. The Kepler-1834 system is a multi-planet architecture hosting 2 confirmed worlds, with Kepler-1834 b sharing its stellar neighborhood alongside Kepler-1834 c.
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-1834 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,821 K |
| Stellar Radius | 0.7880 R☉ |
| Stellar Mass | 0.7650 M☉ |
| Bolometric Luminosity | 0.301 L☉ |
| Metallicity [Fe/H] | 0.160 dex |
| Stellar Age | 12.200 Gyr |
| Apparent Magnitude | V: 15.180 · G: 14.905 |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.049110 AU |
| Orbital Period | 4.603 days |
| Mean Orbital Velocity | 116.1 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.6900° |
| Mean Bulk Density | 4.85 g/cm³ (15.3 km/s vesc) |
| Insolation Flux | 105.2000 S⊕ (~143,177 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1632.100 LY (500.395 pc) |