TYC 4282-00605-1 b
Astrophysical Synthesis & Habitability Characterization
TYC 4282-00605-1 b is a confirmed gas giant exoplanet orbiting the star TYC 4282-00605-1, located approximately 1513.8 light-years (464.13 parsecs) from the Solar System. First announced in 2017 by Roque de los Muchachos Observatory using the Radial Velocity detection technique (measuring periodic Doppler reflex motion in the host star's spectrum), this world measures 12.4 Earth radii (1.11 Jupiter radii) and has a measured mass of 3426.207 Earth masses (10.78 Jupiter masses). Combining its mass and radius yields a mean bulk density of 9.91 g/cm³ (an iron-enriched, high-compression rocky core), a surface gravity of 22.28 g⊕ (218.49 m/s²), and an escape velocity of 185.9 km/s.
In its orbital architecture around TYC 4282-00605-1, TYC 4282-00605-1 b completes one full revolution every 101.54 Earth days at a semi-major axis of 0.422 AU (situated at an orbital separation between Mercury's 0.39 AU and Venus's 0.72 AU). Its mean orbital velocity is approximately 45.2 km/s (compared to Earth's 29.8 km/s). The planet follows a highly eccentric trajectory (e = 0.28, swinging from 0.3038 AU at periapsis out to 0.5402 AU at apoapsis), pointing to past dynamical scattering or secular gravitational perturbations.
⚠️ Thermal Regime (Irradiated / Hot Zone): At an equilibrium temperature of 1285 K (+1012°C / +1854°F) and receiving 456.43 S⊕ (~621,203 W/m²), TYC 4282-00605-1 b orbits interior to the runaway greenhouse boundary where surface liquid water cannot persist.
The host star TYC 4282-00605-1 is classified as a stellar host with an effective photospheric temperature of 4,300 K, a radius of 16.21 R☉, a mass of 0.97 M☉, an estimated bolometric luminosity of 80.599 L☉. Stellar evolution modeling indicates an estimated stellar age of 10.1 Gyr and a metallicity of [Fe/H] = -0.07 dex (near-solar heavy-element abundance). From Earth, TYC 4282-00605-1 shines at apparent V-band magnitude 10.465 (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: Roque de los Muchachos Observatory · Catalogue Source: NASA Exoplanet Archive (IPAC / Caltech).
☀️ Host Star Telemetry
| Host Star Name | TYC 4282-00605-1 |
| Spectral Type | Unclassified |
| Effective Temp (Teff) | 4,300 K |
| Stellar Radius | 16.2100 R☉ |
| Stellar Mass | 0.9700 M☉ |
| Bolometric Luminosity | 80.599 L☉ |
| Metallicity [Fe/H] | -0.070 dex |
| Stellar Age | 10.100 Gyr |
| Apparent Magnitude | V: 10.465 · G: 9.909 |
| System Architecture | 1 Star, 1 Planet |
🪐 Orbital & Physical Dynamics
| Semi-Major Axis (a) | 0.422000 AU |
| Orbital Period | 101.54 days |
| Mean Orbital Velocity | 45.2 km/s |
| Orbital Eccentricity (e) | 0.28000 |
| Orbital Inclination (i) | — |
| Mean Bulk Density | 9.91 g/cm³ (185.9 km/s vesc) |
| Insolation Flux | 456.4310 S⊕ (~621,203 W/m²) |
| Habitable Zone Status | Exterior / Non-HZ |
| Celestial Distance | 1513.800 LY (464.128 pc) |