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BESSELIAN ELEMENTS [1 record]
Record 1 - internal organization data 2024-04-02
Record 1, English
Record 1, Subject field(s)
- Astrophysics and Cosmography
- The Sun (Astronomy)
- The Moon (Astronomy)
- The Earth (Astronomy)
Record 1, Main entry term, English
- Besselian element
1, record 1, English, Besselian%20element
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The Besselian elements are a series of time-dependent variables used to calculate various aspects of a solar eclipse. They describe the movement of the Moon's shadow with respect to the fundamental plane. This plane passes through the center of Earth and is oriented perpendicular to the Moon's shadow axis. Next, the shadow cone is projected onto Earth's surface including the effects of Earth's rotation, the flattening of Earth and the latitude, longitude and elevation of the observer. The local circumstances at the observer's position can then be calculated including the eclipse contact times, eclipse magnitude and the duration of totality (or annularity). 2, record 1, English, - Besselian%20element
Record number: 1, Textual support number: 1 OBS
Besselian element: designation usually used in the plural. 3, record 1, English, - Besselian%20element
Record 1, Key term(s)
- Besselian elements
Record 1, French
Record 1, Domaine(s)
- Astrophysique et cosmographie
- Soleil (Astronomie)
- Lune (Astronomie)
- Terre (Astronomie)
Record 1, Main entry term, French
- élément de Bessel
1, record 1, French, %C3%A9l%C3%A9ment%20de%20Bessel
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Les circonstances d'une éclipse de Soleil ne se déterminent pas aussi facilement que celles d'une éclipse de Lune. Les astronomes publient des quantités, appelées éléments de Bessel [...], qui permettent aux observateurs de calculer les circonstances de l'éclipse en un lieu donné dont on connaît les coordonnées à la surface de la Terre. 1, record 1, French, - %C3%A9l%C3%A9ment%20de%20Bessel
Record number: 1, Textual support number: 1 OBS
élément de Bessel : désignation habituellement utilisée au pluriel. 2, record 1, French, - %C3%A9l%C3%A9ment%20de%20Bessel
Record 1, Key term(s)
- éléments de Bessel
Record 1, Spanish
Record 1, Textual support, Spanish
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