Kepler-1167 b
Astrophysical Synthesis & Habitability Characterization
Kepler-1167 b is a confirmed super-earth exoplanet orbiting the star Kepler-1167, located approximately 2677.4 light-years (820.91 parsecs) from the Solar System. First announced in 2016 by Kepler using the Transit detection technique (producing an estimated primary transit depth of 0.0437% across the stellar disk), this world measures 1.71 Earth radii and has a measured mass of 3.57 Earth masses. Combining its mass and radius yields a mean bulk density of 3.94 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.22 g⊕ (11.96 m/s²), and an escape velocity of 16.2 km/s.
In its orbital architecture around Kepler-1167, Kepler-1167 b completes one full revolution every 1.004 Earth days at a semi-major axis of 0.0175 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 189.6 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 1419 K (+1146°C / +2095°F) and receiving 1,039.70 S⊕ (~1,415,028 W/m²), Kepler-1167 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star Kepler-1167 is classified as a stellar host with an effective photospheric temperature of 4,971 K, a radius of 0.75 R☉, a mass of 0.79 M☉, an estimated bolometric luminosity of 0.308 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.27 Gyr and a metallicity of [Fe/H] = -0.05 dex (near-solar heavy-element abundance). From Earth, Kepler-1167 shines at apparent V-band magnitude 16.047 (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-1167 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,971 K |
| Stellar Radius | 0.7500 R☉ |
| Stellar Mass | 0.7900 M☉ |
| Bolometric Luminosity | 0.308 L☉ |
| Metallicity [Fe/H] | -0.050 dex |
| Stellar Age | 4.270 Gyr |
| Apparent Magnitude | V: 16.047 · G: 15.929 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.017500 AU |
| Orbital Period | 1.004 days |
| Mean Orbital Velocity | 189.6 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | 89.7600° |
| Mean Bulk Density | 3.94 g/cm³ (16.2 km/s vesc) |
| Insolation Flux | 1039.6970 S⊕ (~1,415,028 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 2677.400 LY (820.905 pc) |