KMT-2021-BLG-0912L b
Astrophysical Synthesis & Habitability Characterization
KMT-2021-BLG-0912L b is a confirmed super-earth exoplanet orbiting the star KMT-2021-BLG-0912L, located approximately 18134.3 light-years (5560 parsecs) from the Solar System. First announced in 2022 by KMTNet using the Microlensing detection technique (detected via relativistic gravitational lensing of a background source star), this world measures 1.49 Earth radii and has a measured mass of 2.81 Earth masses. Combining its mass and radius yields a mean bulk density of 4.68 g/cm³ (a terrestrial silicate-iron composition comparable to Earth (5.51 g/cm³)), a surface gravity of 1.27 g⊕ (12.45 m/s²), and an escape velocity of 15.4 km/s.
ℹ️ Thermal & Atmospheric Regime: Current photometric and spectroscopic constraints for KMT-2021-BLG-0912L b place it outside the conservative habitable zone definition pending further atmospheric characterization.
The host star KMT-2021-BLG-0912L is classified as an orange K-type star of spectral type K with a mass of 0.8 M☉.
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: KMTNet · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | KMT-2021-BLG-0912L |
| Spectral Type | K |
| Effective Temp (Teff) | — |
| Stellar Radius | — |
| Stellar Mass | 0.8000 M☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | — |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 3.140000 AU |
| Orbital Period | — |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 4.68 g/cm³ (15.4 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 18134.300 LY (5560.000 pc) |