TIC 147027702 b
Astrophysical Synthesis & Habitability Characterization
TIC 147027702 b is a confirmed gas giant exoplanet orbiting the star TIC 147027702, located approximately 1491.1 light-years (457.19 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 0.22% across the stellar disk), this world measures 10.929 Earth radii (0.98 Jupiter radii) and has a measured mass of 346.433 Earth masses (1.09 Jupiter masses). Combining its mass and radius yields a mean bulk density of 1.46 g/cm³ (a low bulk density dominated by an extended hydrogen-helium gaseous envelope), a surface gravity of 2.9 g⊕ (28.44 m/s²), and an escape velocity of 63 km/s.
In its orbital architecture around TIC 147027702, TIC 147027702 b completes one full revolution every 44.405 Earth days at a semi-major axis of 0.274 AU (orbiting interior to Mercury's 0.387 AU benchmark in the Solar System). Its mean orbital velocity is approximately 67.1 km/s (compared to Earth's 29.8 km/s). Its moderate orbital eccentricity of e = 0.127 carries the world between 0.2392 AU at periapsis and 0.3088 AU at apoapsis, driving measurable seasonal insolation cycles.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 863 K (+590°C / +1094°F) and receiving 90.57 S⊕ (~123,272 W/m²), TIC 147027702 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TIC 147027702 is classified as a stellar host with an effective photospheric temperature of 6,410 K, a radius of 2.136 R☉, a mass of 1.406 M☉, an estimated bolometric luminosity of 6.911 L☉. Stellar evolution modeling indicates an estimated stellar age of 2.7 Gyr and a metallicity of [Fe/H] = -0.08 dex (near-solar heavy-element abundance). From Earth, TIC 147027702 shines at apparent V-band magnitude 11.286 (faint and requiring research-grade or CCD telescopic photometry) 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 | TIC 147027702 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 6,410 K |
| Stellar Radius | 2.1360 R☉ |
| Stellar Mass | 1.4060 M☉ |
| Bolometric Luminosity | 6.911 L☉ |
| Metallicity [Fe/H] | -0.080 dex |
| Stellar Age | 2.700 Gyr |
| Apparent Magnitude | V: 11.286 · G: 10.990 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.274000 AU |
| Orbital Period | 44.405 days |
| Mean Orbital Velocity | 67.1 km/s |
| Orbital Eccentricity (e) | 0.12700 |
| Orbital Inclination (i) | 89.5200° |
| Mean Bulk Density | 1.46 g/cm³ (63 km/s vesc) |
| Insolation Flux | 90.5749 S⊕ (~123,272 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1491.100 LY (457.186 pc) |