# Astro v2.0.0 - Table of Contents

Astronomical calculations in Elixir including sunrise, sunset, moonrise, moonset,
equinox, solstice, moonphase and more.

## Pages

- [Astro](readme.md)
- [License](license.md)
- [Changelog](changelog.md)
- [Sun & Moon Rise and Set Accuracy Comparisons](rise_and_set_comparisons.md)

## Modules

- [Astro](Astro.md): High-level API for common astronomical observations.
- [Astro.Coordinates](Astro.Coordinates.md): Coordinate transformations for high-precision lunar and solar
position calculations.
- [Astro.Earth](Astro.Earth.md): Earth constants, nutation, and elevation-related corrections
for rise/set calculations.
- [Astro.Ephemeris](Astro.Ephemeris.md): Computes the geocentric position of the Moon using a JPL DE440s (or
compatible) SPK binary ephemeris kernel.
- [Astro.Ephemeris.Kernel](Astro.Ephemeris.Kernel.md): Parses JPL DE-series binary SPK ephemeris files (DAF/SPK format).
- [Astro.Lunar](Astro.Lunar.md): Calculates lunar position, phases, distance and related quantities.
- [Astro.Lunar.MoonRiseSet](Astro.Lunar.MoonRiseSet.md): Computes moonrise and moonset times using the JPL DE440s ephemeris and a
fully topocentric bisection algorithm.
- [Astro.Solar](Astro.Solar.md): Solar position, orbital mechanics, and equinox/solstice calculations.
- [Astro.Solar.SunRiseSet](Astro.Solar.SunRiseSet.md): Computes sunrise and sunset times using the JPL DE440s ephemeris and a
scan-and-bisect algorithm.
- [Astro.Supervisor](Astro.Supervisor.md): Provides a supervision tree under which
the required TzWorld backend server can
be started.
- [Astro.Time](Astro.Time.md): Time scales, conversions, and calendar utilities for astronomical calculations.

## Mix Tasks

- [mix astro.download_ephemeris](Mix.Tasks.Astro.DownloadEphemeris.md): Downloads the JPL DE440s ephemeris file (`de440s.bsp`) from NASA's
NAIF server and places it in the application's `priv` directory.