EPIC 201238110 b
Astrophysical Synthesis & Habitability Characterization
EPIC 201238110 b is a confirmed super-earth exoplanet orbiting the star EPIC 201238110, located approximately 519.4 light-years (159.26 parsecs) from the Solar System. First announced in 2019 by K2 using the Transit detection technique (producing an estimated primary transit depth of 0.2101% across the stellar disk), this world measures 1.87 Earth radii and has a measured mass of 4.16 Earth masses. Combining its mass and radius yields a mean bulk density of 3.51 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.19 g⊕ (11.67 m/s²), and an escape velocity of 16.7 km/s.
In its orbital architecture around EPIC 201238110, EPIC 201238110 b completes one full revolution every 28.166 Earth days.
ℹ️ Thermal & Atmospheric Regime: Current photometric and spectroscopic constraints for EPIC 201238110 b place it outside the conservative habitable zone definition pending further atmospheric characterization.
The host star EPIC 201238110 is classified as a stellar host with an effective photospheric temperature of 3,587 K, a radius of 0.374 R☉, a mass of 0.41 M☉, an estimated bolometric luminosity of 0.021 L☉. From Earth, EPIC 201238110 shines at apparent V-band magnitude 16.014 (faint and requiring research-grade or CCD telescopic photometry) 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: K2 · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | EPIC 201238110 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 3,587 K |
| Stellar Radius | 0.3740 R☉ |
| Stellar Mass | 0.4100 M☉ |
| Bolometric Luminosity | 0.021 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 16.014 · G: 15.261 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 28.166 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 3.51 g/cm³ (16.7 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 519.400 LY (159.259 pc) |