Kepler-1452 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1452 b is a confirmed sub-neptune exoplanet orbiting the star Kepler-1452, located approximately 3249.6 light-years (996.32 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0144% across the stellar disk), this world measures 2.7 Earth radii and has a measured mass of 7.75 Earth masses. Combining its mass and radius yields a mean bulk density of 2.17 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.06 g⊕ (10.4 m/s²), and an escape velocity of 19 km/s.
In its orbital architecture around Kepler-1452, Kepler-1452 b completes one full revolution every 42.914 Earth days at a semi-major axis of 0.25764 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 65.3 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 810 K (+537°C / +999°F) and receiving 73.50 S⊕ (~100,035 W/m²), Kepler-1452 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1452 is classified as a stellar host with an effective photospheric temperature of 6,101 K, a radius of 2.06 R☉, a mass of 1.41 M☉, an estimated bolometric luminosity of 5.275 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.24 Gyr and a metallicity of [Fe/H] = 0.14 dex (metal-rich relative to the Sun). From Earth, Kepler-1452 shines at apparent V-band magnitude 13.215 (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-1452 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,101 K |
| Stellar Radius | 2.0600 R☉ |
| Stellar Mass | 1.4100 M☉ |
| Bolometric Luminosity | 5.275 L☉ |
| Metallicity [Fe/H] | 0.140 dex |
| Stellar Age | 3.240 Gyr |
| Apparent Magnitude | V: 13.215 · G: 13.071 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.257640 AU |
| Orbital Period | 42.914 days |
| Mean Orbital Velocity | 65.3 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.6000° |
| Mean Bulk Density | 2.17 g/cm³ (19 km/s vesc) |
| Insolation Flux | 73.5010 S⊕ (~100,035 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 3249.600 LY (996.320 pc) |