🪐 Orbital Period Calculator
Calculate orbits using Kepler's Third Law
Orbital Period
1.00 years
365.25 days = 8.77 K hours
Orbital Velocity
29.79 km/s
Orbits per Year
1.0000
📋 Orbital Parameters
Period (Years)
1.0000
Period (Days)
365.25
Velocity (km/s)
29.79
Distance (AU)
1.0000
Distance (km)
149.60 M
Distance (ly)
1.5813e-5
🌍 Solar System Planets
| Planet | Semi-Major Axis (AU) | Period | Velocity |
|---|---|---|---|
| Mercury | 0.387 | 88 days | 47.4 km/s |
| Venus | 0.723 | 225 days | 35.0 km/s |
| Earth | 1.000 | 365.25 days | 29.8 km/s |
| Mars | 1.524 | 687 days | 24.1 km/s |
| Jupiter | 5.203 | 11.86 years | 13.1 km/s |
| Neptune | 30.07 | 164.8 years | 5.4 km/s |
📐 Kepler's Third Law
T² = (4π²/GM) × a³Simplified: T (years) = a^1.5 / √M
Where: T = orbital period, a = semi-major axis (AU), M = central mass (solar masses)