K2-376 b
Astrophysical Synthesis & Habitability Characterization
K2-376 b is a confirmed super-earth exoplanet orbiting the star K2-376, located approximately 527.1 light-years (161.61 parsecs) from the Solar System. First announced in 2022 by K2 using the Transit detection technique (producing an estimated primary transit depth of 0.0192% across the stellar disk), this world measures 1.736 Earth radii and has a measured mass of 3.66 Earth masses. Combining its mass and radius yields a mean bulk density of 3.86 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.21 g⊕ (11.87 m/s²), and an escape velocity of 16.2 km/s.
In its orbital architecture around K2-376, K2-376 b completes one full revolution every 5.776 Earth days.
ℹ️ Thermal & Atmospheric Regime: Current photometric and spectroscopic constraints for K2-376 b place it outside the conservative habitable zone definition pending further atmospheric characterization.
The host star K2-376 is classified as a solar-type yellow star of spectral type G1 with an effective photospheric temperature of 5,937 K, a radius of 1.149 R☉, a mass of 0.908 M☉, an estimated bolometric luminosity of 1.472 L☉. Stellar evolution modeling indicates a metallicity of [Fe/H] = -0.176 dex (metal-poor relative to the Sun). From Earth, K2-376 shines at apparent V-band magnitude 10.415 (faint and requiring research-grade or CCD telescopic photometry) 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: K2 · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | K2-376 |
| Spectral Type | G1 |
| Effective Temp (Teff) | 5,937 K |
| Stellar Radius | 1.1490 R☉ |
| Stellar Mass | 0.9080 M☉ |
| Bolometric Luminosity | 1.472 L☉ |
| Metallicity [Fe/H] | -0.176 dex |
| Stellar Age | — |
| Apparent Magnitude | V: 10.415 · G: 10.300 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 5.776 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 3.86 g/cm³ (16.2 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 527.100 LY (161.610 pc) |