HD 86065 b
Astrophysical Synthesis & Habitability Characterization
HD 86065 b is a confirmed gas giant exoplanet orbiting the star HD 86065, located approximately 131.7 light-years (40.37 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 12.5 Earth radii (1.12 Jupiter radii) and has a measured mass of 2877.301 Earth masses (9.05 Jupiter masses). Combining its mass and radius yields a mean bulk density of 8.12 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 18.41 g⊕ (180.54 m/s²), and an escape velocity of 169.7 km/s.
In its orbital architecture around HD 86065, HD 86065 b completes one full revolution every 25775.789 Earth days (70.57Julian years) at a semi-major axis of 15.947 AU (a wide outer-system orbit beyond Jupiter's 5.20 AU distance in our Solar System). Its mean orbital velocity is approximately 6.7 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.219 carries the world between 12.4546 AU at periapsis and 19.4394 AU at apoapsis, driving measurable seasonal insolation cycles.
❄️ Thermal Regime (Cryogenic Zone): With an equilibrium temperature of 53 K (-220°C / -364°F) and an incident flux of 0.00 S⊕ (~2 W/m²), surface water and volatile species on HD 86065 b would remain locked in cryogenic ice phases unless warmed by subsurface tidal or radiogenic heating.
The host star HD 86065 is classified as a stellar host with an effective photospheric temperature of 4,928 K, a radius of 0.7803 R☉, a mass of 0.81 M☉, an estimated bolometric luminosity of 0.322 L☉. Stellar evolution modeling indicates a metallicity of [Fe/H] = -0.02 dex (near-solar heavy-element abundance). From Earth, HD 86065 shines at apparent V-band magnitude 9.36 (accessible to binoculars and small amateur telescopes) in the Southern 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: Multiple Observatories · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | HD 86065 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,928 K |
| Stellar Radius | 0.7803 R☉ |
| Stellar Mass | 0.8100 M☉ |
| Bolometric Luminosity | 0.322 L☉ |
| Metallicity [Fe/H] | -0.020 dex |
| Stellar Age | — |
| Apparent Magnitude | V: 9.360 · G: 9.061 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 15.947000 AU |
| Orbital Period | 25775.789 days |
| Mean Orbital Velocity | 6.7 km/s |
| Orbital Eccentricity (e) | 0.21900 |
| Orbital Inclination (i) | 29.8210° |
| Mean Bulk Density | 8.12 g/cm³ (169.7 km/s vesc) |
| Insolation Flux | 0.0013 S⊕ (~2 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 131.700 LY (40.366 pc) |