This article is about the proposed moon of Venus. For the Egyptian goddess, see Neith.
"Moon of Venus" redirects here. For the quasi-satellite of Venus sometimes referred to as its moon, see Zoozve.
You can help expand this article with text translated from the corresponding article in Russian. (September 2011) Click [show] for important translation instructions.
View a machine-translated version of the Russian article.
Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia.
Consider adding a topic to this template: there are already 1,220 articles in the main category, and specifying|topic= will aid in categorization.
Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article.
You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Russian Wikipedia article at [[:ru:Спутники Венеры]]; see its history for attribution.
You may also add the template {{Translated|ru|Спутники Венеры}} to the talk page.
Neith is a hypothetical natural satellite of Venus reportedly sighted by Giovanni Cassini in 1672 and by several other astronomers in following years. It was 'observed' up to 30 times by astronomers until 1770, when there were no new sightings and it was not found during the transit of Venus in 1761 and 1769.[1]
Francesco Fontana's drawing of the supposed satellite(s) of Venus. Woodcuts from Fontana's work. The fringes of light around Venus are produced by optical effects
In 1672, Giovanni Cassini found a small object close to Venus. He did not take great note of his observation, but when he saw it again in 1686, he made a formal announcement of a possible moon of Venus. The object was seen by many other astronomers over a large period of time: by James Short in 1740, by Andreas Mayer in 1759, by Joseph Louis Lagrange in 1761, another eighteen observations in 1761, including one in which a small spot was seen following Venus while the planet was in a transit across the Sun, eight observations in 1764, and by Christian Horrebow in 1768.
Many astronomers failed to find any moon during their observations of Venus, including William Herschel in 1768. Cassini originally observed Neith to be one-fourth the diameter of Venus. In 1761, Lagrange announced that Neith's orbital plane was perpendicular to the ecliptic. That same year, however, mathematician Jean le Rond d'Alembert wrote to Voltaire that Neith had "declined to follow his mistress during her passage over the sun", questioning whether Venus truly had a moon.[2] In 1766, the director of the Vienna Observatory speculated that the observations of the moon were optical illusions. He said: "the bright image of Venus was reflected in the eye and back into the telescope, creating a smaller secondary image." In 1777, J.H. Lambert estimated its orbital period as eleven days and three hours.
In 1884, Jean-Charles Houzeau, the former director of the Royal Observatory of Brussels suggested that the "moon" was actually a planet which orbited the Sun every 283 days. Such a planet would be in conjunction with Venus every 1080 days, which fit with the recorded observations. Houzeau was also the first to give the object the name Neith, after an Egyptian goddess.
^Stevenson, David (2014). "Making the Moon" (PDF). Physics Today: 37. Retrieved 1 May 2022.
External linksedit
Neith, the Moon of Venus
January 01, 1970
neith, hypothetical, moon, this, article, about, proposed, moon, venus, egyptian, goddess, neith, moon, venus, redirects, here, quasi, satellite, venus, sometimes, referred, moon, zoozve, help, expand, this, article, with, text, translated, from, corresponding. This article is about the proposed moon of Venus For the Egyptian goddess see Neith Moon of Venus redirects here For the quasi satellite of Venus sometimes referred to as its moon see Zoozve You can help expand this article with text translated from the corresponding article in Russian September 2011 Click show for important translation instructions View a machine translated version of the Russian article Machine translation like DeepL or Google Translate is a useful starting point for translations but translators must revise errors as necessary and confirm that the translation is accurate rather than simply copy pasting machine translated text into the English Wikipedia Consider adding a topic to this template there are already 1 220 articles in the main category and specifying topic will aid in categorization Do not translate text that appears unreliable or low quality If possible verify the text with references provided in the foreign language article You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation A model attribution edit summary is Content in this edit is translated from the existing Russian Wikipedia article at ru Sputniki Venery see its history for attribution You may also add the template Translated ru Sputniki Venery to the talk page For more guidance see Wikipedia Translation Neith is a hypothetical natural satellite of Venus reportedly sighted by Giovanni Cassini in 1672 and by several other astronomers in following years It was observed up to 30 times by astronomers until 1770 when there were no new sightings and it was not found during the transit of Venus in 1761 and 1769 1 Francesco Fontana s drawing of the supposed satellite s of Venus Woodcuts from Fontana s work The fringes of light around Venus are produced by optical effects Contents 1 Discovery 2 Summary of sightings 3 Observations 4 See also 5 References 6 External linksDiscovery editThis section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed January 2023 Learn how and when to remove this message In 1672 Giovanni Cassini found a small object close to Venus He did not take great note of his observation but when he saw it again in 1686 he made a formal announcement of a possible moon of Venus The object was seen by many other astronomers over a large period of time by James Short in 1740 by Andreas Mayer in 1759 by Joseph Louis Lagrange in 1761 another eighteen observations in 1761 including one in which a small spot was seen following Venus while the planet was in a transit across the Sun eight observations in 1764 and by Christian Horrebow in 1768 Summary of sightings editYear City Person Number of sightings 1645 Naples Francesco Fontana 3 1646 Naples Francesco Fontana 1 1672 Paris Giovanni Domenico Cassini 1 1686 Paris Giovanni Domenico Cassini 1 1740 London James Short 1 1759 Greifswald Andreas Mayer 1 1761 Marseilles Joseph Lagrange 3 1761 Limoges Jacques Montaingne 4 1761 St Neots unknown 1 1761 Greifswald Friedrich Artzt 1 1761 Krefeld Abraham Scheuten 2 1761 Copenhagen Peter Roedkiaer 8 1764 Copenhagen Peter Roedkiaer 2 1764 Copenhagen Christian Horrebow and others 3 1764 Auxerre Marian 3 1768 Copenhagen Christian Horrebow 1Observations editMany astronomers failed to find any moon during their observations of Venus including William Herschel in 1768 Cassini originally observed Neith to be one fourth the diameter of Venus In 1761 Lagrange announced that Neith s orbital plane was perpendicular to the ecliptic That same year however mathematician Jean le Rond d Alembert wrote to Voltaire that Neith had declined to follow his mistress during her passage over the sun questioning whether Venus truly had a moon 2 In 1766 the director of the Vienna Observatory speculated that the observations of the moon were optical illusions He said the bright image of Venus was reflected in the eye and back into the telescope creating a smaller secondary image In 1777 J H Lambert estimated its orbital period as eleven days and three hours In 1884 Jean Charles Houzeau the former director of the Royal Observatory of Brussels suggested that the moon was actually a planet which orbited the Sun every 283 days Such a planet would be in conjunction with Venus every 1080 days which fit with the recorded observations Houzeau was also the first to give the object the name Neith after an Egyptian goddess The Belgian Academy of Sciences published a paper in 1887 which studied each reported sighting of Neith Ultimately they determined that most of the sightings could be explained by stars which had been in the vicinity of Venus including Chi Orionis M Tauri 71 Orionis Nu Geminorum and Theta Librae See also editList of hypothetical astronomical objects 524522 Zoozve a quasi satellite of Venus 2013 ND15 a temporary trojan of Venus VenusReferences edit Helge Kragh 2008 The Moon that Was not The Saga of Venus Spurious Satellite Birkhauser ISBN 978 3 7643 8908 6 Stevenson David 2014 Making the Moon PDF Physics Today 37 Retrieved 1 May 2022 External links editNeith the Moon of Venus Retrieved from https en wikipedia org w index php title Neith hypothetical moon amp oldid 1215387427, wikipedia, wiki, book, books, library,
