Astronomy Foundations

Overview

Sky calculations in quantsmind.astronomy (sky.py): angular separations, AU/light-year/parsec conversions, Keplerian orbits, and parallax distances from exact defined constants.

Purpose

Let users derive the year, orbital speeds, and stellar distances from first principles with plain floats.

Concept

Haversine for sky angles; T = 2π√(a³/GM) for periods; d = 1/p for parallax; conversions off the exact AU.

API

angular_separation(), au_to_m(), m_to_au(), light_year_to_m(), parsec_to_m(), parallax_distance_pc(), kepler_period(), circular_orbital_velocity(), distance_modulus(), absolute_magnitude(), plus exact constants.

Input / Processing / Output

Input: degrees, meters, kilograms, arcseconds. Processing: closed forms. Output: degrees, seconds, m/s, parsecs.

Example

python examples/astronomy/earth_orbit.py derives a 365.25-day year and 29.79 km/s orbital speed from 1 AU + 1 solar mass.

Limitations

Two-body Keplerian model only; no perturbations, no full coordinate frames, no ephemerides — not an Astropy replacement.