Kepler-132 e
Astrophysical Synthesis & Habitability Characterization
Kepler-132 e is a confirmed terrestrial exoplanet orbiting the star Kepler-132, located approximately 1140.1 light-years (349.55 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0097% across the stellar disk), this world measures 1.18 Earth radii and has a measured mass of 1.76 Earth masses. Combining its mass and radius yields a mean bulk density of 5.91 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.26 g⊕ (12.36 m/s²), and an escape velocity of 13.7 km/s.
In its orbital architecture around Kepler-132, Kepler-132 e completes one full revolution every 110.287 Earth days at a semi-major axis of 0.43927 AU (situated at an orbital separation between Mercury's 0.39 AU and Venus's 0.72 AU). Its mean orbital velocity is approximately 43.3 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 414 K (+141°C / +286°F) and receiving 6.10 S⊕ (~8,302 W/m²), Kepler-132 e orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-132 is classified as a stellar host with an effective photospheric temperature of 6,023 K, a radius of 1.1 R☉, a mass of 1.03 M☉, an estimated bolometric luminosity of 1.429 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.37 Gyr and a metallicity of [Fe/H] = -0.13 dex (metal-poor relative to the Sun). From Earth, Kepler-132 shines at apparent V-band magnitude 11.922 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere. The Kepler-132 system is a multi-planet architecture hosting 4 confirmed worlds, with Kepler-132 e sharing its stellar neighborhood alongside Kepler-132 b, Kepler-132 c, Kepler-132 d.
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-132 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,023 K |
| Stellar Radius | 1.1000 R☉ |
| Stellar Mass | 1.0300 M☉ |
| Bolometric Luminosity | 1.429 L☉ |
| Metallicity [Fe/H] | -0.130 dex |
| Stellar Age | 4.370 Gyr |
| Apparent Magnitude | V: 11.922 |
| System Architecture | 2 Stars, 4 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.439270 AU |
| Orbital Period | 110.287 days |
| Mean Orbital Velocity | 43.3 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.7300° |
| Mean Bulk Density | 5.91 g/cm³ (13.7 km/s vesc) |
| Insolation Flux | 6.1000 S⊕ (~8,302 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1140.100 LY (349.549 pc) |