TIC 161045582 b
Astrophysical Synthesis & Habitability Characterization
TIC 161045582 b is a confirmed sub-neptune exoplanet orbiting the star TIC 161045582, located approximately 529.2 light-years (162.25 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 0.0364% across the stellar disk), this world measures 2.246 Earth radii and has a measured mass of 5.67 Earth masses. Combining its mass and radius yields a mean bulk density of 2.76 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 17.8 km/s.
In its orbital architecture around TIC 161045582, TIC 161045582 b completes one full revolution every 8.856 Earth days.
☁️ Atmospheric Regime (Volatile / Gas Envelope): With a radius of 2.246 R⊕, TIC 161045582 b exceeds the empirical ~1.8–2.2 R⊕ Fulton radius valley threshold, indicating a substantial hydrogen-helium or supercritical volatile envelope without a conventional solid terrestrial surface.
The host star TIC 161045582 is classified as a stellar host with an effective photospheric temperature of 5,684 K, a radius of 1.0798 R☉, a mass of 1.04 M☉, an estimated bolometric luminosity of 1.092 L☉. Stellar evolution modeling indicates a metallicity of [Fe/H] = 0.188 dex (metal-rich relative to the Sun). From Earth, TIC 161045582 shines at apparent V-band magnitude 10.642 (faint and requiring research-grade or CCD telescopic photometry) in the Northern 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 | TIC 161045582 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 5,684 K |
| Stellar Radius | 1.0798 R☉ |
| Stellar Mass | 1.0400 M☉ |
| Bolometric Luminosity | 1.092 L☉ |
| Metallicity [Fe/H] | 0.188 dex |
| Stellar Age | — |
| Apparent Magnitude | V: 10.642 · G: 10.589 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | — |
| Orbital Period | 8.856 days |
| Orbital Eccentricity (e) | Circular (0.00) |
| Orbital Inclination (i) | 88.2923° |
| Mean Bulk Density | 2.76 g/cm³ (17.8 km/s vesc) |
| Insolation Flux | — |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 529.200 LY (162.246 pc) |