Kepler-529 b
Astrophysical Synthesis & Habitability Characterization
Kepler-529 b is a confirmed super-earth exoplanet orbiting the star Kepler-529, located approximately 2606 light-years (799.01 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0224% across the stellar disk), this world measures 1.86 Earth radii and has a measured mass of 4.12 Earth masses. Combining its mass and radius yields a mean bulk density of 3.53 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.19 g⊕ (11.67 m/s²), and an escape velocity of 16.6 km/s.
In its orbital architecture around Kepler-529, Kepler-529 b completes one full revolution every 1.98 Earth days at a semi-major axis of 0.0309 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 169.7 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 1662 K (+1389°C / +2532°F) and receiving 1,808.41 S⊕ (~2,461,246 W/m²), Kepler-529 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-529 is classified as a stellar host with an effective photospheric temperature of 6,087 K, a radius of 1.14 R☉, a mass of 1.07 M☉, an estimated bolometric luminosity of 1.601 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.98 Gyr and a metallicity of [Fe/H] = -0.1 dex (near-solar heavy-element abundance). From Earth, Kepler-529 shines at apparent V-band magnitude 13.779 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere. The Kepler-529 system is a multi-planet architecture hosting 3 confirmed worlds, with Kepler-529 b sharing its stellar neighborhood alongside Kepler-529 c, Kepler-529 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-529 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,087 K |
| Stellar Radius | 1.1400 R☉ |
| Stellar Mass | 1.0700 M☉ |
| Bolometric Luminosity | 1.601 L☉ |
| Metallicity [Fe/H] | -0.100 dex |
| Stellar Age | 3.980 Gyr |
| Apparent Magnitude | V: 13.779 · G: 13.740 |
| System Architecture | 1 Star, 3 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.030900 AU |
| Orbital Period | 1.98 days |
| Mean Orbital Velocity | 169.7 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 80.8900° |
| Mean Bulk Density | 3.53 g/cm³ (16.6 km/s vesc) |
| Insolation Flux | 1808.4100 S⊕ (~2,461,246 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2606.000 LY (799.008 pc) |