Taking into account the effect of aberration, the beginning of the solar year is the moment when the mean right ascension of the sun reaches 18:40 or 280°, and since it is the same regardless of the location of the longitude, it is used to calculate the positions of celestial bodies. In modern times, the beginning of the Bessel year coincides well with the actual New Year's Day, and the time is expressed in decimal units of years. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
光行差の影響を考えにいれて,平均太陽の赤経が 18時 40分あるいは 280°になる瞬間を年始とした太陽年で,経度の異なる土地でも同じになるので,天体の位置計算などに用いられる。ベッセル年の年頭は,近代においては実際の元旦とよく一致し,時刻の表示は小数を用いた年単位で表わされる。
出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報 |
<<: Hessen - Hessen (English spelling)
>>: Bessel point - Bessel point
...the area corresponds to the extremely arid reg...
1. Someone who has a higher position than the pers...
A seated statue of Amida Nyorai at Kotoku-in Templ...
A book on Ryobu Shinto created in the Kamakura per...
Along with Okuni of Izumo, he is likened to the f...
A phenomenon in which a steep natural slope sudde...
…The peasants attacked the manor house, killed th...
The burning of books. In particular, the act or ri...
...They grow in colonies on legumes such as kudzu...
Substances that cause renal hypertension. In 1939...
To carry out operations in a position that surroun...
A small resort town in northern New Hampshire, USA...
An ancient legend about a person, the ancestor of...
Ceramicist. Born on March 17, 1894, to Yozaemon K...
In the mid-modern period, the center of kyoka poe...