HIP 114933 b
Astrophysical Synthesis & Habitability Characterization
HIP 114933 b is a confirmed gas giant exoplanet orbiting the star HIP 114933, located approximately 331.9 light-years (101.77 parsecs) from the Solar System. First announced in 2021 by Multiple Observatories using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 13.4 Earth radii (1.2 Jupiter radii) and has a measured mass of 616.587 Earth masses (1.94 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.41 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 3.43 g⊕ (33.64 m/s²), and an escape velocity of 75.9 km/s.
In its orbital architecture around HIP 114933, HIP 114933 b completes one full revolution every 1481.6 Earth days (4.06Julian years) at a semi-major axis of 2.84 AU (corresponding to the middle-system regime between Mars at 1.52 AU and Jupiter at 5.20 AU). Its mean orbital velocity is approximately 20.9 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.21 carries the world between 2.2436 AU at periapsis and 3.4364 AU at apoapsis, driving measurable seasonal insolation cycles.
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 13.400 R⊕, HIP 114933 b exceeds the empirical ~1.8–2.2 R⊕ Fulton radius valley threshold, indicating a substantial hydrogen-helium or supercritical volatile envelope without a conventional solid terrestrial surface.
The host star HIP 114933 is classified as an orange K-type star of spectral type K0 III with an effective photospheric temperature of 4,823 K, a radius of 5.27 R☉, a mass of 1.39 M☉, an estimated bolometric luminosity of 13.483 L☉. Stellar evolution modeling indicates an estimated stellar age of 3.4 Gyr and a metallicity of [Fe/H] = 0.06 dex (metal-rich relative to the Sun). From Earth, HIP 114933 shines at apparent V-band magnitude 7.25 (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 | HIP 114933 |
| Spectral Type | K0 III |
| Effective Temp (Teff) | 4,823 K |
| Stellar Radius | 5.2700 R☉ |
| Stellar Mass | 1.3900 M☉ |
| Bolometric Luminosity | 13.483 L☉ |
| Metallicity [Fe/H] | 0.060 dex |
| Stellar Age | 3.400 Gyr |
| Apparent Magnitude | V: 7.250 · G: 6.977 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 2.840000 AU |
| Orbital Period | 1481.6 days |
| Mean Orbital Velocity | 20.9 km/s |
| Orbital Eccentricity (e) | 0.21000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 1.41 g/cm³ (75.9 km/s vesc) |
| Insolation Flux | 1.7110 S⊕ (~2,329 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 331.900 LY (101.766 pc) |