Documentation / @interstellar-tools/constants / G_SI

Variable: G_SI

const G_SI: number = 6.6743e-11;

Defined in: physics.ts:24

Gravitational constant G in SI units.

Numerical value from CODATA 2018: 6.67430 × 10⁻¹¹ m³·kg⁻¹·s⁻² (relative standard uncertainty 2.2e-5). Use this for Newtonian gravity calculations:

$$F=G\frac{m_1{m}_2}{r^2}$$

Default

6.6743e-11;

See

• https://physics.nist.gov/cgi-bin/cuu/Value?bg
• https://en.wikipedia.org/wiki/Gravitational_constant

Example

// Standard gravitational parameter (mu) for Earth:
const M_earth = 5.97219e24; // kg
const mu_earth = G_SI * M_earth; // ≈ 3.986004e14 m³/s²