HR 2562 b
Astrophysical Synthesis & Habitability Characterization
HR 2562 b is a confirmed gas giant exoplanet orbiting the star HR 2562, located approximately 110.9 light-years (34.01 parsecs) from the Solar System. First announced in 2016 by Gemini Observatory using the Imaging detection technique (resolved directly via high-contrast coronagraphic or interferometric imaging), this world measures 12.442 Earth radii (1.11 Jupiter radii) and has a measured mass of 6992.225 Earth masses (22 Jupiter masses). Combining its mass and radius yields a mean bulk density of 20.02 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 45.17 g⊕ (442.97 m/s²), and an escape velocity of 265.2 km/s.
The planet follows a highly eccentric trajectory (e = 0.34, swinging from 14.652 AU at periapsis out to 29.748 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1255 K (+982°C / +1800°F) and receiving 0.01 S⊕ (~9 W/m²), HR 2562 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star HR 2562 is classified as a warm F-type star of spectral type F5 V with an effective photospheric temperature of 6,597 K, a radius of 1.334 R☉, a mass of 1.3 M☉, an estimated bolometric luminosity of 3.024 L☉. Stellar evolution modeling indicates an estimated stellar age of 0.6 Gyr and a metallicity of [Fe/H] = 0.02 dex (near-solar heavy-element abundance). From Earth, HR 2562 shines at apparent V-band magnitude 6.11 (visible to the unaided human eye under dark skies) 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: Gemini Observatory · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | HR 2562 |
| Spectral Type | F5 V |
| Effective Temp (Teff) | 6,597 K |
| Stellar Radius | 1.3340 R☉ |
| Stellar Mass | 1.3000 M☉ |
| Bolometric Luminosity | 3.024 L☉ |
| Metallicity [Fe/H] | 0.020 dex |
| Stellar Age | 0.600 Gyr |
| Apparent Magnitude | V: 6.110 · G: 5.997 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 22.200000 AU |
| Orbital Period | — |
| Orbital Eccentricity (e) | 0.34000 |
| Orbital Inclination (i) | 86.7000° |
| Mean Bulk Density | 20.02 g/cm³ (265.2 km/s vesc) |
| Insolation Flux | 0.0069 S⊕ (~9 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 110.900 LY (34.007 pc) |