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- Le tritos est un (en) de 3986,63 jours, soit de 11 ans réduit de 30 à 31 jours (10 ans et 11 mois). Il correspond à :
* 135 mois synodiques ;
* 146,50144 mois draconitiques ;
* 11,50144 années d'éclipses (23 saisons d'éclipses) ;
* 144,68135 mois anomalistiques. La civilisation Maya a utilisé des calculs issus de leurs observations des cycles d'éclipses dans lesquels une période de 3 tritos était d'approximativement de 11 960 jours, basé sur 46 périodes de leur calendrier tzolkin (de 46 × 260 jours). Le nombre de « mois anomalistiques » compris dans cette période (144,68), a une fraction proche de 2/3, signifiant que chaque éclipse à 3 tritos d'intervalle se produit à peu près dans la même position de l'orbite elliptique lunaire, c'est ainsi que ces éclipses de cette succession seront globalement similaires. (fr)
- The tritos is an eclipse cycle of 3,986.628 days (about 10 years, 11 months).It corresponds to:
* 135 synodic months
* 146.50144 draconic months
* 11.50144 eclipse years (23 eclipse seasons)
* 144.68135 anomalistic months. The length of the tritos is equal to the length of the inex minus the length of the saros eclipse cycles. Therefore, eclipses that occur 1 tritos apart (i.e. both eclipses belong to the same tritos series), belong to two different saros series with series numbers that differ by one. The pre-Columbian Maya used a calculation in their own observations of eclipse cycles in which a period of three tritoses was approximated by 11960 days, based on 46 periods of their tzolk'in calendar (i.e. 46 × 260 days). The number of anomalistic months in a tritos (144.68), having a fraction near 2⁄3, means every third eclipse is in nearly the same position in the elliptical orbit, so eclipses will have similar timing and total versus annular quality. Solar and lunar eclipse event dates will repeat on this cycle for about 700 years. (en)
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- Le tritos est un (en) de 3986,63 jours, soit de 11 ans réduit de 30 à 31 jours (10 ans et 11 mois). Il correspond à :
* 135 mois synodiques ;
* 146,50144 mois draconitiques ;
* 11,50144 années d'éclipses (23 saisons d'éclipses) ;
* 144,68135 mois anomalistiques. (fr)
- The tritos is an eclipse cycle of 3,986.628 days (about 10 years, 11 months).It corresponds to:
* 135 synodic months
* 146.50144 draconic months
* 11.50144 eclipse years (23 eclipse seasons)
* 144.68135 anomalistic months. The length of the tritos is equal to the length of the inex minus the length of the saros eclipse cycles. Therefore, eclipses that occur 1 tritos apart (i.e. both eclipses belong to the same tritos series), belong to two different saros series with series numbers that differ by one. Solar and lunar eclipse event dates will repeat on this cycle for about 700 years. (en)
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