Kepler-1530 c
Astrophysical Synthesis & Habitability Characterization
Kepler-1530 c is a confirmed super-earth exoplanet orbiting the star Kepler-1530, located approximately 1597.8 light-years (489.88 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0295% across the stellar disk), this world measures 1.65 Earth radii and has a measured mass of 3.36 Earth masses. Combining its mass and radius yields a mean bulk density of 4.12 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.23 g⊕ (12.06 m/s²), and an escape velocity of 16 km/s.
In its orbital architecture around Kepler-1530, Kepler-1530 c completes one full revolution every 5.323 Earth days at a semi-major axis of 0.05744 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 117.4 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 1167 K (+894°C / +1641°F) and receiving 135.18 S⊕ (~183,979 W/m²), Kepler-1530 c orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1530 is classified as a stellar host with an effective photospheric temperature of 5,477 K, a radius of 0.88 R☉, a mass of 0.92 M☉, an estimated bolometric luminosity of 0.625 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.27 Gyr and a metallicity of [Fe/H] = 0.03 dex (near-solar heavy-element abundance). From Earth, Kepler-1530 shines at apparent V-band magnitude 14.15 (faint and requiring research-grade or CCD telescopic photometry) in the Northern celestial hemisphere. The Kepler-1530 system is a multi-planet architecture hosting 3 confirmed worlds, with Kepler-1530 c sharing its stellar neighborhood alongside Kepler-1530 b, Kepler-1530 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-1530 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,477 K |
| Stellar Radius | 0.8800 R☉ |
| Stellar Mass | 0.9200 M☉ |
| Bolometric Luminosity | 0.625 L☉ |
| Metallicity [Fe/H] | 0.030 dex |
| Stellar Age | 4.270 Gyr |
| Apparent Magnitude | V: 14.150 · G: 14.006 |
| System Architecture | 1 Star, 3 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.057440 AU |
| Orbital Period | 5.323 days |
| Mean Orbital Velocity | 117.4 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 85.1100° |
| Mean Bulk Density | 4.12 g/cm³ (16 km/s vesc) |
| Insolation Flux | 135.1790 S⊕ (~183,979 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1597.800 LY (489.876 pc) |