Kepler-883 b
Astrophysical Synthesis & Habitability Characterization
Kepler-883 b is a confirmed super-earth exoplanet orbiting the star Kepler-883, located approximately 2046.5 light-years (627.46 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 1.78 Earth radii and has a measured mass of 3.82 Earth masses. Combining its mass and radius yields a mean bulk density of 3.73 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.21 g⊕ (11.87 m/s²), and an escape velocity of 16.4 km/s.
In its orbital architecture around Kepler-883, Kepler-883 b completes one full revolution every 12.985 Earth days at a semi-major axis of 0.10288 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 86.2 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 818 K (+545°C / +1013°F) and receiving 163.05 S⊕ (~221,914 W/m²), Kepler-883 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-883 is classified as a stellar host with an effective photospheric temperature of 6,116 K, a radius of 1.09 R☉, a mass of 1.06 M☉, an estimated bolometric luminosity of 1.491 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.02 Gyr and a metallicity of [Fe/H] = -0.13 dex (metal-poor relative to the Sun). From Earth, Kepler-883 shines at apparent V-band magnitude 13.169 (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-883 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,116 K |
| Stellar Radius | 1.0900 R☉ |
| Stellar Mass | 1.0600 M☉ |
| Bolometric Luminosity | 1.491 L☉ |
| Metallicity [Fe/H] | -0.130 dex |
| Stellar Age | 3.020 Gyr |
| Apparent Magnitude | V: 13.169 · G: 13.007 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.102880 AU |
| Orbital Period | 12.985 days |
| Mean Orbital Velocity | 86.2 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.9100° |
| Mean Bulk Density | 3.73 g/cm³ (16.4 km/s vesc) |
| Insolation Flux | 163.0520 S⊕ (~221,914 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2046.500 LY (627.455 pc) |