Kepler-1445 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1445 b is a confirmed terrestrial exoplanet orbiting the star Kepler-1445, located approximately 1651.5 light-years (506.36 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0049% across the stellar disk), this world measures 0.96 Earth radii and has a measured mass of 0.84 Earth masses. Combining its mass and radius yields a mean bulk density of 5.24 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 0.91 g⊕ (8.92 m/s²), and an escape velocity of 10.5 km/s.
In its orbital architecture around Kepler-1445, Kepler-1445 b completes one full revolution every 10.601 Earth days at a semi-major axis of 0.09587 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 98.4 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 987 K (+714°C / +1317°F) and receiving 248.55 S⊕ (~338,274 W/m²), Kepler-1445 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1445 is classified as a stellar host with an effective photospheric temperature of 6,150 K, a radius of 1.26 R☉, a mass of 1.13 M☉, an estimated bolometric luminosity of 2.038 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.8 Gyr and a metallicity of [Fe/H] = -0.03 dex (near-solar heavy-element abundance). From Earth, Kepler-1445 shines at apparent V-band magnitude 12.407 (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-1445 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,150 K |
| Stellar Radius | 1.2600 R☉ |
| Stellar Mass | 1.1300 M☉ |
| Bolometric Luminosity | 2.038 L☉ |
| Metallicity [Fe/H] | -0.030 dex |
| Stellar Age | 3.800 Gyr |
| Apparent Magnitude | V: 12.407 · G: 12.418 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.095870 AU |
| Orbital Period | 10.601 days |
| Mean Orbital Velocity | 98.4 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 86.6600° |
| Mean Bulk Density | 5.24 g/cm³ (10.5 km/s vesc) |
| Insolation Flux | 248.5480 S⊕ (~338,274 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1651.500 LY (506.357 pc) |