X-Nico

4 unusual facts about Lunar theory


Lunar theory

To the Babylonian astronomer Kidinnu (in Greek or Latin, Kidenas or Cidenas) has been attributed the invention (5th or 4th century BC) of a system "B" for predicting the position of the moon, taking account that the moon continually changes its speed along its path relative to the background of fixed stars.

The precision of this science is currently being extended still further by the recently established Apache Point Observatory Lunar Laser-ranging Operation.

and other notable mathematical astronomers also made significant contributions, including: Edmond Halley; Philippe Gustave le Doulcet, Comte de Pontécoulant; John Couch Adams; George William Hill; and Simon Newcomb.

Moon theory

Lunar theory, various theories to account for the Moon's motion



see also

Tide-predicting machine

Darwin's harmonic developments of the tide-generating forces were later brought by A T Doodson up to date and extended in light of the new and more accurate lunar theory of E W Brown that remained current through most of the twentieth century.