vitality formula
Find the velocity based on the orbital position and semi-major axis.
symbols, variables and units
v: m/s; μ: m³/s²; r,a: m; hyperbola a<0.
applicable conditions and boundaries
Kepler two-body model; the parabola takes 1/a=0.
formula source code
The following is a copyable LaTeX expression.
v^2=\mu\left(\frac2r-\frac1a\right)
Reference and Extended Learning
NASA · Basics of Space Flight ↗is organized according to model definition and assumptions. Please check actual conditions and original literature before engineering, research and clinical use.
vis vivatrack speed