GJ 367 c
Astrophysical Synthesis & Habitability Characterization
GJ 367 c is a confirmed super-earth exoplanet orbiting the star GJ 367, located approximately 30.7 light-years (9.41 parsecs) from the Solar System. First announced in 2023 by La Silla Observatory using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 1.86 Earth radii and has a measured mass of 4.13 Earth masses. Combining its mass and radius yields a mean bulk density of 3.54 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 GJ 367, GJ 367 c completes one full revolution every 11.53 Earth days. Its moderate orbital eccentricity of e = 0.09 driving measurable seasonal insolation cycles.
ℹ️ Thermal & Atmospheric Regime: Current photometric and spectroscopic constraints for GJ 367 c place it outside the conservative habitable zone definition pending further atmospheric characterization.
The host star GJ 367 is classified as a low-mass red dwarf of spectral type M1.0 V with an effective photospheric temperature of 3,522 K, a radius of 0.458 R☉, a mass of 0.455 M☉, an estimated bolometric luminosity of 0.029 L☉. Stellar evolution modeling indicates a metallicity of [Fe/H] = -0.01 dex (near-solar heavy-element abundance). From Earth, GJ 367 shines at apparent V-band magnitude 10.153 (faint and requiring research-grade or CCD telescopic photometry) in the Southern celestial hemisphere. The GJ 367 system is a multi-planet architecture hosting 3 confirmed worlds, with GJ 367 c sharing its stellar neighborhood alongside GJ 367 b, GJ 367 d.
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: La Silla Observatory · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | GJ 367 |
| Spectral Type | M1.0 V |
| Effective Temp (Teff) | 3,522 K |
| Stellar Radius | 0.4580 R☉ |
| Stellar Mass | 0.4550 M☉ |
| Bolometric Luminosity | 0.029 L☉ |
| Metallicity [Fe/H] | -0.010 dex |
| Stellar Age | — |
| Apparent Magnitude | V: 10.153 · G: 9.152 |
| System Architecture | 1 Star, 3 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 11.53 days |
| Orbital Eccentricity (e) | 0.09000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 3.54 g/cm³ (16.7 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 30.700 LY (9.413 pc) |