TOI-6098 b
Astrophysical Synthesis & Habitability Characterization
TOI-6098 b is a confirmed sub-neptune exoplanet orbiting the star TOI-6098, located approximately 268.2 light-years (82.23 parsecs) from the Solar System. First announced in 2026 by Transiting Exoplanet Survey Satellite (TESS) using the Transit detection technique (producing an estimated primary transit depth of 0.0382% across the stellar disk), this world measures 2.3 Earth radii and has a measured mass of 5.9 Earth masses. Combining its mass and radius yields a mean bulk density of 2.67 g/cm³ (an intermediate density indicative of a deep water-ice mantle or dense volatile envelope), a surface gravity of 1.12 g⊕ (10.98 m/s²), and an escape velocity of 17.9 km/s.
In its orbital architecture around TOI-6098, TOI-6098 b completes one full revolution every 2.73 Earth days. The orbit is modeled as circular (e = 0.00), maintaining a constant stellar distance throughout its year.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1048 K (+775°C / +1427°F) and receiving 200.86 S⊕ (~273,365 W/m²), TOI-6098 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TOI-6098 is classified as a stellar host with an effective photospheric temperature of 5,599 K, a radius of 1.0789 R☉, a mass of 0.99 M☉, an estimated bolometric luminosity of 1.026 L☉. From Earth, TOI-6098 shines at apparent V-band magnitude 9.42 (accessible to binoculars and small amateur telescopes) 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: Transiting Exoplanet Survey Satellite (TESS) · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | TOI-6098 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,599 K |
| Stellar Radius | 1.0789 R☉ |
| Stellar Mass | 0.9900 M☉ |
| Bolometric Luminosity | 1.026 L☉ |
| Metallicity [Fe/H] | — |
| Stellar Age | — |
| Apparent Magnitude | V: 9.420 · G: 9.236 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 2.73 days |
| Orbital Eccentricity (e) | 0.00000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 2.67 g/cm³ (17.9 km/s vesc) |
| Insolation Flux | 200.8560 S⊕ (~273,365 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 268.200 LY (82.233 pc) |