Cool Moon Facts by Whip

Real astronomy and dated history, with sources. Documented traditions and folklore. Modern lunar astrology · symbolic, not predictive.

Chart basics · Intermediate

Ephemeris

Also called ephemerides

A table, or a calculation, giving the positions of celestial bodies at regular times.

Astrologers once drew charts from printed ephemerides listing each planet's longitude at noon or midnight. Software now computes them. This site's ephemeris is its own: the VSOP87 planetary theory, Meeus's lunar series and a fit to NASA JPL's DE421 for Pluto, checked against JPL's ephemeris to within a few arcseconds.

  • Kind: Astronomy, Calculation
  • Tradition: Shared across Western traditions
  • In this site’s birth chart: used

Related: Ecliptic longitude, Delta T, Julian Day

Written for Cool Moon Facts in its own words. An astrology source documents what astrologers believe or practise; it does not establish that astrology works.

All terms · Your birth chart

Settings

Your location

Only used to work out rise and set times. It stays in this browser.

Moon orientation

Southern-hemisphere skies show the moon flipped. This follows your location automatically.

Saved facts

Everything saved here

This site keeps your location, your saved facts and your settings in this browser and nowhere else. Nothing is uploaded, and nothing here can be recovered once it is gone.

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