Celestial Position Table - Tentaichihyō (English) Japanese Ephemeris

Japanese: 天体位置表 - てんたいいちひょう（英語表記）Japanese Ephemeris

A Japanese astronomical almanac. It provides forecasts of astronomical phenomena associated with the positions of celestial bodies and their movements. First published by the Navy Hydrographic Department in 1943, it is currently published by the Hydrographic Department of the Japan Coast Guard. Its contents are broadly divided into two parts. Part 1 provides the heliocentric and geocentric ecliptic coordinates of the Earth, planets, and the four major asteroids, as well as the Moon's right ascension, declination, parallax, and mean positions, precession, and nutation of the stars. Part 2 covers astronomical phenomena, such as forecasts of solar and lunar eclipses, stellar eclipses, and the times of sunrise and sunset, as well as the 24 solar terms and miscellaneous holidays, such as the vernal equinox and summer solstice, and days of the week. The "Celestial Position Table" has a wide range of uses, including compiling nautical and civil calendars, preparing astronomical observations, and providing basic information for surveying and space activities.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

日本の天体暦。諸天体の位置およびその運動に伴う天文諸現象の予報を掲げている。1943年海軍水路部の創刊，現在海上保安庁水路部が発行している。内容は2部に大別され，第1部は地球，惑星，四大小惑星の日心，月の地心黄道座標，またそれらの赤経，赤緯，視差および恒星の平均位置，歳差，章動などを掲げる。第2部は天文現象で日･月食，星食，日･月出没時刻などの予報，春分，夏至などの二十四節気と雑節，曜日など。《天体位置表》の用途は航海暦や常用暦の編集，天文観測の準備，測量や宇宙活動の基礎資料など多様である。

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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