Collectors: 10,000Orbit: 1.00 AUCapture: 0.26%Output: 1.00e+24 W
Structure Type
Dyson Swarm: Thousands to trillions of independent solar collectors in orbit. Most physically realistic. Each satellite is a solar panel array or mirror. No rigid structure needed. Can be built incrementally.
Star Parameters
Star Mass (M☉)1.00
Star Luminosity (L☉)1.00
Sphere Parameters
Orbital Radius (AU)1.00
Coverage (%)0.26
Panel Efficiency (%)35
Shell Thickness (m)0.01
Calculated Output
Star Luminosity3.846e+26 W
Sphere Surface Area2.81e+23 m²
Collector Area7.31e+20 m²
Intercepted Power1.00e+24 W
Electrical Output3.50e+23 W
Waste Heat6.50e+23 W
Equilibrium Temp (K)394 K
Orbital Period365.25 days
Orbital Velocity29.78 km/s
Shell/Collector Mass—
Material (vs Mercury)—
Build Time @ 1 TW—
Earth Power Equiv—
Kardashev Scale
IIIIII
1.74e+17 WK = 0.733.85e+26 W
Kardashev Scale: K = (log₁₀(P) − 6) / 10 where P is power in watts.
Type I = 1.74×10¹⁷ W (planet's star input).
Type II = 3.85×10²⁶ W (full star output).
Earth 2024 ≈ 1.8×10¹³ W → K ≈ 0.73.
Engineering Constraints
Structural: A rigid shell at 1 AU would experience no net gravitational force (shell theorem) but is unstable — any perturbation drifts it into the star. Requires active stationkeeping or is replaced by a swarm. Material stress at 1 AU exceeds any known material's tensile strength for a rigid shell.
Thermal: Collectors absorb solar radiation and must re-radiate waste heat from the outer surface. Equilibrium temperature depends on albedo and emissivity. Inner surface sees ~1361 W/m² at 1 AU (solar constant).
Material: Full shell at 1 AU requires mass roughly equivalent to disassembling Mercury. A swarm at 0.26% coverage uses ~10¹⁹ kg — feasible from asteroid mining.