HIP 14810 c
Astrophysical Synthesis & Habitability Characterization
HIP 14810 c is a confirmed gas giant exoplanet orbiting the star HIP 14810, located approximately 164.6 light-years (50.48 parsecs) from the Solar System. First announced in 2006 by W. M. Keck Observatory using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 13.6 Earth radii (1.21 Jupiter radii) and has a measured mass of 416.357 Earth masses (1.31 Jupiter masses). Combining its mass and radius yields a mean bulk density of 0.91 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.25 g⊕ (22.06 m/s²), and an escape velocity of 61.9 km/s.
In its orbital architecture around HIP 14810, HIP 14810 c completes one full revolution every 147.747 Earth days at a semi-major axis of 0.549 AU (situated at an orbital separation between Mercury's 0.39 AU and Venus's 0.72 AU). Its mean orbital velocity is approximately 40.4 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.1566 carries the world between 0.463 AU at periapsis and 0.635 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 373 K (+100°C / +212°F) and receiving 3.24 S⊕ (~4,413 W/m²), HIP 14810 c orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star HIP 14810 is classified as a solar-type yellow star of spectral type G5 with an effective photospheric temperature of 5,544 K, a radius of 1.07 R☉, a mass of 1.01 M☉, an estimated bolometric luminosity of 0.97 L☉. Stellar evolution modeling indicates an estimated stellar age of 5.84 Gyr and a metallicity of [Fe/H] = 0.24 dex (metal-rich relative to the Sun). From Earth, HIP 14810 shines at apparent V-band magnitude 8.52 (accessible to binoculars and small amateur telescopes) in the Northern celestial hemisphere. The HIP 14810 system is a multi-planet architecture hosting 3 confirmed worlds, with HIP 14810 c sharing its stellar neighborhood alongside HIP 14810 b, HIP 14810 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: W. M. Keck Observatory · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | HIP 14810 |
| Spectral Type | G5 |
| Effective Temp (Teff) | 5,544 K |
| Stellar Radius | 1.0700 R☉ |
| Stellar Mass | 1.0100 M☉ |
| Bolometric Luminosity | 0.97 L☉ |
| Metallicity [Fe/H] | 0.240 dex |
| Stellar Age | 5.840 Gyr |
| Apparent Magnitude | V: 8.520 · G: 8.333 |
| System Architecture | 1 Star, 3 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.549000 AU |
| Orbital Period | 147.747 days |
| Mean Orbital Velocity | 40.4 km/s |
| Orbital Eccentricity (e) | 0.15660 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 0.91 g/cm³ (61.9 km/s vesc) |
| Insolation Flux | 3.2423 S⊕ (~4,413 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 164.600 LY (50.480 pc) |