HD 62364 c
Astrophysical Synthesis & Habitability Characterization
HD 62364 c is a confirmed gas giant exoplanet orbiting the star HD 62364, located approximately 173.2 light-years (53.11 parsecs) from the Solar System. First announced in 2022 by Multiple Observatories using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 12 Earth radii (1.07 Jupiter radii) and has a measured mass of 7923.462 Earth masses (24.93 Jupiter masses). Combining its mass and radius yields a mean bulk density of 25.28 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 55.02 g⊕ (539.56 m/s²), and an escape velocity of 287.4 km/s.
In its orbital architecture around HD 62364, HD 62364 c completes one full revolution every 74839.946 Earth days (204.9Julian years) at a semi-major axis of 36.984 AU (a wide outer-system orbit beyond Jupiter's 5.20 AU distance in our Solar System). Its mean orbital velocity is approximately 5.4 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.773, swinging from 8.3954 AU at periapsis out to 65.5726 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
❄️ Thermal Regime (Cryogenic Zone): With an equilibrium temperature of 59 K (-214°C / -353°F) and an incident flux of 0.00 S⊕ (~3 W/m²), surface water and volatile species on HD 62364 c would remain locked in cryogenic ice phases unless warmed by subsurface tidal or radiogenic heating.
The host star HD 62364 is classified as a warm F-type star of spectral type F7 V with an effective photospheric temperature of 6,255 K, a radius of 1.401 R☉, a mass of 1.19 M☉, an estimated bolometric luminosity of 2.696 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.901 Gyr and a metallicity of [Fe/H] = -0.11 dex (metal-poor relative to the Sun). From Earth, HD 62364 shines at apparent V-band magnitude 7.32 (accessible to binoculars and small amateur telescopes) in the Southern celestial hemisphere. The HD 62364 system is a multi-planet architecture hosting 2 confirmed worlds, with HD 62364 c sharing its stellar neighborhood alongside HD 62364 b.
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: Multiple Observatories · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | HD 62364 |
| Spectral Type | F7 V |
| Effective Temp (Teff) | 6,255 K |
| Stellar Radius | 1.4010 R☉ |
| Stellar Mass | 1.1900 M☉ |
| Bolometric Luminosity | 2.696 L☉ |
| Metallicity [Fe/H] | -0.110 dex |
| Stellar Age | 3.901 Gyr |
| Apparent Magnitude | V: 7.320 · G: 7.181 |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 36.984000 AU |
| Orbital Period | 74839.946 days |
| Mean Orbital Velocity | 5.4 km/s |
| Orbital Eccentricity (e) | 0.77300 |
| Orbital Inclination (i) | 38.7890° |
| Mean Bulk Density | 25.28 g/cm³ (287.4 km/s vesc) |
| Insolation Flux | 0.0020 S⊕ (~3 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 173.200 LY (53.112 pc) |