WISPIT 1 c
Astrophysical Synthesis & Habitability Characterization
WISPIT 1 c is a confirmed gas giant exoplanet orbiting the star WISPIT 1, located approximately 750.2 light-years (230.01 parsecs) from the Solar System. First announced in 2025 by Paranal Observatory using the Imaging detection technique (resolved directly via high-contrast coronagraphic or interferometric imaging), this world measures 12.8 Earth radii (1.14 Jupiter radii) and has a measured mass of 1684.491 Earth masses (5.3 Jupiter masses). Combining its mass and radius yields a mean bulk density of 4.43 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 10.28 g⊕ (100.81 m/s²), and an escape velocity of 128.3 km/s.
❄️ Thermal Regime (Cryogenic Zone): With an equilibrium temperature of 8 K (-265°C / -445°F), surface water and volatile species on WISPIT 1 c would remain locked in cryogenic ice phases unless warmed by subsurface tidal or radiogenic heating.
The host star WISPIT 1 is classified as an orange K-type star of spectral type K4 V with an effective photospheric temperature of 4,670 K, a radius of 1.1161 R☉, a mass of 0.72 M☉, an estimated bolometric luminosity of 0.532 L☉. Stellar evolution modeling indicates an estimated stellar age of 0.016 Gyr. From Earth, WISPIT 1 shines at apparent V-band magnitude 13.182 (faint and requiring research-grade or CCD telescopic photometry) in the Southern celestial hemisphere. The WISPIT 1 system is a multi-planet architecture hosting 2 confirmed worlds, with WISPIT 1 c sharing its stellar neighborhood alongside WISPIT 1 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: Paranal Observatory · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | WISPIT 1 |
| Spectral Type | K4 V |
| Effective Temp (Teff) | 4,670 K |
| Stellar Radius | 1.1161 R☉ |
| Stellar Mass | 0.7200 M☉ |
| Bolometric Luminosity | 0.532 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | 0.016 Gyr |
| Apparent Magnitude | V: 13.182 · G: 12.724 |
| System Architecture | 2 Stars, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 840.000000 AU |
| Orbital Period | — |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 4.43 g/cm³ (128.3 km/s vesc) |
| Insolation Flux | 0.0000 S⊕ |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 750.200 LY (230.007 pc) |