Scientific Calculators & Simulation Platform Dataset

Interactive astronomy calculators, each carrying its published formula and a pure compute function over the CODATA 2018 and IAU 2015 constants: orbital mechanics (escape/orbital velocity, Kepler period, surface gravity, Schwarzschild radius, Hill & Roche limits, density, synodic period), stellar physics (luminosity, blackbody flux, Wien peak, mass–luminosity, main-sequence lifetime), photometry & distance (absolute magnitude, distance modulus, parallax, angular diameter & separation), exoplanets (equilibrium temperature, equal-insolation distance, transit probability), cosmology (redshift velocity, Hubble distance), and instruments (angular resolution, magnification, image scale, field of view, limiting magnitude, shot-noise SNR).