BD+03 2562 b
Astrophysical Synthesis & Habitability Characterization
BD+03 2562 b is a confirmed gas giant exoplanet orbiting the star BD+03 2562, located approximately 3491.9 light-years (1070.63 parsecs) from the Solar System. First announced in 2017 by Multiple Observatories using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 12.7 Earth radii (1.13 Jupiter radii) and has a measured mass of 2034.112 Earth masses (6.4 Jupiter masses). Combining its mass and radius yields a mean bulk density of 5.48 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 12.61 g⊕ (123.66 m/s²), and an escape velocity of 141.6 km/s.
In its orbital architecture around BD+03 2562, BD+03 2562 b completes one full revolution every 481.9 Earth days (1.32Julian years) at a semi-major axis of 1.3 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 29.3 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.2 carries the world between 1.04 AU at periapsis and 1.56 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 985 K (+712°C / +1314°F) and receiving 296.56 S⊕ (~403,619 W/m²), BD+03 2562 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star BD+03 2562 is classified as a stellar host with an effective photospheric temperature of 4,095 K, a radius of 32.35 R☉, a mass of 1.14 M☉, an estimated bolometric luminosity of 264.03 L☉. Stellar evolution modeling indicates an estimated stellar age of 5.2 Gyr and a metallicity of [Fe/H] = -0.71 dex (metal-poor relative to the Sun). From Earth, BD+03 2562 shines at apparent V-band magnitude 9.577 (accessible to binoculars and small amateur telescopes) 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: Multiple Observatories · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | BD+03 2562 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,095 K |
| Stellar Radius | 32.3500 R☉ |
| Stellar Mass | 1.1400 M☉ |
| Bolometric Luminosity | 264.03 L☉ |
| Metallicity [Fe/H] | -0.710 dex |
| Stellar Age | 5.200 Gyr |
| Apparent Magnitude | V: 9.577 · G: 8.998 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 1.300000 AU |
| Orbital Period | 481.9 days |
| Mean Orbital Velocity | 29.3 km/s |
| Orbital Eccentricity (e) | 0.20000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 5.48 g/cm³ (141.6 km/s vesc) |
| Insolation Flux | 296.5605 S⊕ (~403,619 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 3491.900 LY (1070.630 pc) |