Satellite Orbital Decay Calculator
Atmospheric Aerodynamics: Calculate thermospheric drag deceleration ($a_D$), altitude loss per orbit ($\Delta a_{rev}$), ballistic coefficient, and satellite re-entry lifetime.
Satellite & Orbit Parameters
Orbital Lifetime & Decay Rates
Estimated Lifetime
-- yrs
Decay Rate per Day
-- m/day
Ballistic Coefficient ($B$)
-- kg/m²
Air Density ($
ho$)
-- kg/m³
Drag Aerodynamics & Orbit Diagnostics
• Orbital Velocity ($v = sqrt{mu/r}$): -- km/s
• Drag Deceleration ($a_D = 0.5
ho v^2 / B$): -- $mu ext{m/s}^2$
• Altitude Loss per Orbit ($Delta a_{rev}$): -- m/rev
• 5-Year De-orbit Compliance (FCC/ESA 5-Year Rule): --
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