Kepler-1763 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1763 b is a confirmed terrestrial exoplanet orbiting the star Kepler-1763, located approximately 2467.3 light-years (756.49 parsecs) from the Solar System. First announced in 2021 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.007% across the stellar disk), this world measures 1.147 Earth radii and has a measured mass of 1.59 Earth masses. Combining its mass and radius yields a mean bulk density of 5.81 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.21 g⊕ (11.87 m/s²), and an escape velocity of 13.2 km/s.
In its orbital architecture around Kepler-1763, Kepler-1763 b completes one full revolution every 1.48 Earth days at a semi-major axis of 0.0257 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 188.9 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 1822 K (+1549°C / +2820°F) and receiving 2,597.27 S⊕ (~3,534,884 W/m²), Kepler-1763 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1763 is classified as a stellar host with an effective photospheric temperature of 5,897 K, a radius of 1.259 R☉, a mass of 1.026 M☉, an estimated bolometric luminosity of 1.72 L☉. Stellar evolution modeling indicates an estimated stellar age of 5.4 Gyr and a metallicity of [Fe/H] = 0.02 dex (near-solar heavy-element abundance). From Earth, Kepler-1763 shines at apparent V-band magnitude 13.634 (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-1763 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,897 K |
| Stellar Radius | 1.2590 R☉ |
| Stellar Mass | 1.0260 M☉ |
| Bolometric Luminosity | 1.72 L☉ |
| Metallicity [Fe/H] | 0.020 dex |
| Stellar Age | 5.400 Gyr |
| Apparent Magnitude | V: 13.634 · G: 13.511 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.025700 AU |
| Orbital Period | 1.48 days |
| Mean Orbital Velocity | 188.9 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.2800° |
| Mean Bulk Density | 5.81 g/cm³ (13.2 km/s vesc) |
| Insolation Flux | 2597.2700 S⊕ (~3,534,884 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2467.300 LY (756.486 pc) |