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http://dbpedia.org/ontology/abstract C/1471 Y1 est une comète non périodique duC/1471 Y1 est une comète non périodique du Système solaire, passée près de la Terre entre la fin de l'année 1471 et le début de l'année 1472. La comète est apparue dès le mois de décembre 1471. On l'observe au Japon vers le 9 janvier 1472, où on estime que c'est la plus grande comète jamais vue. Elle a aussi été vue en Chine et en Corée. L'astronome Regiomontanus observe la comète à l'aide d'un rayon astronomique (ou bâton de Jacob) à partir du 13 janvier 1472 et jusqu'à la fin du mois de février. Il estime alors de manière erronée sa distance de la Terre à 9 rayons terrestres. Elle est restée visible peut-être jusqu'en avril.t restée visible peut-être jusqu'en avril. , The great comet of 1472 was visible from CThe great comet of 1472 was visible from Christmas Day 1471 to 1 March 1472 (Julian Calendar), for a total of 59 days. The comet is notable because it was observed by 15th-century astronomers, during a time of rapid progress in planetary theory, shortly before the Copernican Revolution.The comet was observed by Regiomontanus and Bernhard Walther from Nuremberg.Regiomontanus tried to estimate its distance from Earth, using the parallax.According to Seargeant (2009): In agreement with the prevailing Aristotelian theory on comets as atmospheric phenomena, he estimated its distance to be at least 8,200 miles (13,120 km) and, from this, estimated the central condensation as 26, and the entire coma as 81 miles (41.6 and 129.6 km respectively) in diameter. These values, of course, fail by orders of magnitude, but he is to be commended for this attempt at determining the physical dimensions of the comet. An Italian physician named Angelo Cato de Supino also left a description of the comet, claiming it was as bright and majestic as the full moon, its tail extending over more than 30 degrees.The comet (or "broom star") was also observed in Chinese astronomy, where it is noted that it was visible even at midday.The 15th century English Chronicler, Warkworth, left a detailed account of the comet's appearance and disappearance from the night sky of England.sappearance from the night sky of England. , C/1471 Y1 ist ein Komet, der in den Jahren 1471 und 1472 mit dem bloßen Auge gesehen werden konnte. Er wird aufgrund seiner außergewöhnlichen Helligkeit zu den „Großen Kometen“ gezählt. , C/1471 Y1 è una cometa non periodica che pC/1471 Y1 è una cometa non periodica che poté essere vista ad occhio nudo nel 1471 e nel 1472, quando arrivò al suo perielio, a una distanza di circa 73 milioni di km, ossia circa 0,486 au, dal Sole. A causa della sua eccezionale luminosità, è annoverata tra le "Grandi Comete" ed è spesso indicata come "Grande cometa del 1471" (o del 1472).ome "Grande cometa del 1471" (o del 1472).
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rdfs:comment The great comet of 1472 was visible from CThe great comet of 1472 was visible from Christmas Day 1471 to 1 March 1472 (Julian Calendar), for a total of 59 days. The comet is notable because it was observed by 15th-century astronomers, during a time of rapid progress in planetary theory, shortly before the Copernican Revolution.The comet was observed by Regiomontanus and Bernhard Walther from Nuremberg.Regiomontanus tried to estimate its distance from Earth, using the parallax.According to Seargeant (2009):he parallax.According to Seargeant (2009): , C/1471 Y1 è una cometa non periodica che pC/1471 Y1 è una cometa non periodica che poté essere vista ad occhio nudo nel 1471 e nel 1472, quando arrivò al suo perielio, a una distanza di circa 73 milioni di km, ossia circa 0,486 au, dal Sole. A causa della sua eccezionale luminosità, è annoverata tra le "Grandi Comete" ed è spesso indicata come "Grande cometa del 1471" (o del 1472).ome "Grande cometa del 1471" (o del 1472). , C/1471 Y1 ist ein Komet, der in den Jahren 1471 und 1472 mit dem bloßen Auge gesehen werden konnte. Er wird aufgrund seiner außergewöhnlichen Helligkeit zu den „Großen Kometen“ gezählt. , C/1471 Y1 est une comète non périodique duC/1471 Y1 est une comète non périodique du Système solaire, passée près de la Terre entre la fin de l'année 1471 et le début de l'année 1472. La comète est apparue dès le mois de décembre 1471. On l'observe au Japon vers le 9 janvier 1472, où on estime que c'est la plus grande comète jamais vue. Elle a aussi été vue en Chine et en Corée. L'astronome Regiomontanus observe la comète à l'aide d'un rayon astronomique (ou bâton de Jacob) à partir du 13 janvier 1472 et jusqu'à la fin du mois de février. Il estime alors de manière erronée sa distance de la Terre à 9 rayons terrestres.istance de la Terre à 9 rayons terrestres.
rdfs:label C/1471 Y1 , Great Comet of 1472
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