Basic calendar - Kihonreki

Japanese: 基本暦 - きほんれき
Basic calendar - Kihonreki

…In general, modern ephemeris tables are created by first determining the position of the Sun according to Keplerian motion, and then adding perturbations due to other planets. For the Sun and planets, the famous tables are those of UJJ Le Verrier, which was adopted for the French calendar, and S. Newcomb, which was used for the basic calendars of other countries (GW Hill's tables for Jupiter and Saturn). The motion of the Moon is complex, so the tables are quite voluminous. …

*Some of the terminology explanations that refer to the "basic calendar" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…一般に近代の推算表では,まずケプラー運動による位置を求め,これに他の惑星などによる摂動を加えるという形をとる。太陽と惑星については,フランス暦に採用されたU.J.J.ルベリエの表,その他の国の基本暦に用いられたS.ニューカムの表(木星,土星はG.W.ヒルの表)が有名である。月の運動は複雑であるため表は大部となる。…

※「基本暦」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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