14 And b
Astrophysical Synthesis & Habitability Characterization
14 And b is a confirmed gas giant exoplanet orbiting the star 14 And, located approximately 246 light-years (75.44 parsecs) from the Solar System. First announced in 2008 by Okayama Astrophysical Observatory using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 13.1 Earth radii (1.17 Jupiter radii) and has a measured mass of 1131.151 Earth masses (3.56 Jupiter masses). Combining its mass and radius yields a mean bulk density of 2.77 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 6.59 g⊕ (64.63 m/s²), and an escape velocity of 103.9 km/s.
In its orbital architecture around 14 And, 14 And b completes one full revolution every 186.76 Earth days at a semi-major axis of 0.775 AU (comparable to the inner terrestrial zone between Venus, Earth at 1.00 AU, and Mars at 1.52 AU). Its mean orbital velocity is approximately 45.1 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 910 K (+637°C / +1179°F) and receiving 115.16 S⊕ (~156,737 W/m²), 14 And b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star 14 And is classified as an orange K-type star of spectral type K0 III with an effective photospheric temperature of 4,888 K, a radius of 11.55 R☉, a mass of 1.78 M☉, an estimated bolometric luminosity of 68.325 L☉. Stellar evolution modeling indicates an estimated stellar age of 4.5 Gyr and a metallicity of [Fe/H] = -0.21 dex (metal-poor relative to the Sun). From Earth, 14 And shines at apparent V-band magnitude 5.231 (visible to the unaided human eye under dark skies) 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: Okayama Astrophysical Observatory · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | 14 And |
| Spectral Type | K0 III |
| Effective Temp (Teff) | 4,888 K |
| Stellar Radius | 11.5500 R☉ |
| Stellar Mass | 1.7800 M☉ |
| Bolometric Luminosity | 68.325 L☉ |
| Metallicity [Fe/H] | -0.210 dex |
| Stellar Age | 4.500 Gyr |
| Apparent Magnitude | V: 5.231 · G: 4.918 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.775000 AU |
| Orbital Period | 186.76 days |
| Mean Orbital Velocity | 45.1 km/s |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 2.77 g/cm³ (103.9 km/s vesc) |
| Insolation Flux | 115.1634 S⊕ (~156,737 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 246.000 LY (75.439 pc) |