ephemeris

Swiss Ephemeris for Clojure

This library is based on the Swiss Ephemeris port to Java by Thomas Mack. The source code of v2.01.00-01 is included, compiled and packaged. I guess any JVM-based language can use this ephemeris if there is interest.

To use it with just about any (other) programming language - take a look at ephemeris-api.

Required

• OpenJDK 11
• Leiningen 2

Use

Clojure

lein repl

There is a single calc function in ephemeris.core that does it all.

(calc) ;; give it a map of what you'd like to get - merged into the defaults

Here are the current defaults as a template to override with what's wanted:

{:utc nil
 :geo {:lat nil :lon nil}
 :points [:Sun :Moon :Mercury :Venus :Mars :Jupiter :Saturn
          :TrueNode :Uranus :Neptune :Pluto]
 :angles [:Asc :MC]
 :houses "O"
 :meta true}

Without geo-location coordinates it returns the current (i.e. mundane) planet positions.

The time parameter :utc can be a string in ISO 8601 or RFC 3339 format which include ability to specify timezone.

CLI

This is just for testing purposes. You can give it a 'string' map, in edn data format, see the defaults above.

It's full-featured, though also slow due to JVM startup time.

bin/ephemeris
bin/ephemeris '{}' # produces same result as the above

Test

Run lein test or better lein autotest.

Lacks

The following features are still missing. Some will be added soon and others later.

• Accept :geo location in more formats:
  • ISO 6709 string
  • Vector of numbers [43.22 27.92] lat & lon -- are fixed in that order
  • Vector of strings ["43n13" "27e55"] oldschool -- lat & lon in either order (parse & check: 'N', 'E', 'S', 'W')
• Error Handling
• Precision :ephemeris option :SWIEPH or :JPLEPH
• Precession :siderial true or specify :ayanamsha
• Schema validation for calc parameter
• House :System keywords would be better
• Fixed Stars
• Prenatal Lunation
• Testimonies

Anything else so far needed for practice of astrology, I believe could be derived without an ephemeris providing it.

License

GPL v2+ or Swiss Ephemeris