TOI-6054.02
Astrophysical Synthesis & Habitability Characterization
TOI-6054.02 is a confirmed sub-neptune exoplanet orbiting the star TOI-6054, located approximately 259 light-years (79.41 parsecs) from the Solar System. First announced in 2024 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.0242% across the stellar disk), this world measures 2.82 Earth radii and has a measured mass of 9.3 Earth masses. Combining its mass and radius yields a mean bulk density of 2.29 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.17 g⊕ (11.47 m/s²), and an escape velocity of 20.3 km/s.
In its orbital architecture around TOI-6054, TOI-6054.02 completes one full revolution every 12.564 Earth days at a semi-major axis of 0.1079 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 93.4 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.332, swinging from 0.0721 AU at periapsis out to 0.1437 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1143 K (+870°C / +1598°F) and receiving 285.00 S⊕ (~387,885 W/m²), TOI-6054.02 orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-6054 is classified as a stellar host with an effective photospheric temperature of 6,047 K, a radius of 1.662 R☉, a mass of 1.107 M☉, an estimated bolometric luminosity of 3.314 L☉. Stellar evolution modeling indicates an estimated stellar age of 6 Gyr and a metallicity of [Fe/H] = -0.07 dex (near-solar heavy-element abundance). From Earth, TOI-6054 shines at apparent V-band magnitude 8.02 (accessible to binoculars and small amateur telescopes) in the Northern celestial hemisphere. The TOI-6054 system is a multi-planet architecture hosting 2 confirmed worlds, with TOI-6054.02 sharing its stellar neighborhood alongside TOI-6054.01.
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: Transiting Exoplanet Survey Satellite (TESS) · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | TOI-6054 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,047 K |
| Stellar Radius | 1.6620 R☉ |
| Stellar Mass | 1.1070 M☉ |
| Bolometric Luminosity | 3.314 L☉ |
| Metallicity [Fe/H] | -0.070 dex |
| Stellar Age | 6.000 Gyr |
| Apparent Magnitude | V: 8.020 · G: 7.878 |
| System Architecture | 1 Star, 2 Planets |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.107900 AU |
| Orbital Period | 12.564 days |
| Mean Orbital Velocity | 93.4 km/s |
| Orbital Eccentricity (e) | 0.33200 |
| Orbital Inclination (i) | 88.8200° |
| Mean Bulk Density | 2.29 g/cm³ (20.3 km/s vesc) |
| Insolation Flux | 285.0000 S⊕ (~387,885 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 259.000 LY (79.407 pc) |