Swiss Ephemeris library for Go

This is a fork from the original work at https://github.com/astrotools/swego

I have updated swiss ephemeris files, added module support, and made it compile on go >= 1.18.

This is not a very quality repository. The original projects (Swiss Ephemeris and swego) have a lot of problems and I did my best to fix them and come up with something usable, but that's about it.

This repository contains multiple ways to interface with the Swiss Ephemeris.

• swecgo interfaces with the C library via cgo.
• swerker interfaces with the C library via a separate worker or workers.
  • swerker-stdio is a worker that runs as a subprocess.

Pronunciation

The name of this package is pronounced swie-go, like cgo: cee-go.

Docs for sweph files download (used by the lib)

• File needed for astrological purposes is de441.eph (de440.eph is the same but cover more years)
• ftp://ssd.jpl.nasa.gov/pub/eph/planets/bsp
• https://rhodesmill.org/skyfield/planets.html
• https://ssd.jpl.nasa.gov/planets/eph_export.html
• https://www.astro.com/ftp/swisseph/doc/swisseph.htm#_Toc58931065
• https://ipnpr.jpl.nasa.gov/progress_report/42-196/196C.pdf