{"id":169036,"date":"2021-08-25T10:00:10","date_gmt":"2021-08-25T08:00:10","guid":{"rendered":"https:\/\/osr.org\/?p=169036"},"modified":"2021-08-10T09:29:26","modified_gmt":"2021-08-10T07:29:26","slug":"algol-bekende-sterren","status":"publish","type":"post","link":"https:\/\/osr.org\/nl\/blog\/astronomie-nl\/algol-bekende-sterren\/","title":{"rendered":"Algol &#8211; Bekende sterren"},"content":{"rendered":"<h2><span style=\"color: #15acdf;\">Stellaire omgeving<\/span><\/h2>\n<p>De ster Algol bevindt zich in het sterrenbeeld Perseus op ongeveer 92,8 lichtjaar afstand van ons. Om deze drievoudige ster te lokaliseren moet je eerst de W of M vorm van constellatie Cassiopeia spotten aan de sterrenhemel. Als je vervolgens wat naar beneden kijkt zie je de ster Gamma Cassiopeia en Ruchbah. Dichtbij staat vervolgens de constellatie Perseus met de stralende ster Algol aan de sterrenhemel.<\/p>\n<h2><span style=\"color: #15acdf;\">Waarneming<\/span><\/h2>\n<p>Een van de redenen waarom Algol populair is, is omdat deze ster met het blote oog zichtbaar is. De ster is het hele jaar te zien op de middelste noordelijke breedtegraden. In de herfst- tot lentemaanden is Algol het beste te zien aan de nachtelijke hemel. In de herfst zie je Algol in noordoostelijke richting, in de winter recht boven je, en in de lente beweegt de ster in noordwestelijke richting.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-57592\" title=\"Algol Star\" src=\"https:\/\/osr.org\/wp-content\/uploads\/2016\/04\/algol-star.jpg\" alt=\"Algol\" width=\"650\" height=\"400\" srcset=\"https:\/\/osr.org\/wp-content\/uploads\/2016\/04\/algol-star.jpg 650w, https:\/\/osr.org\/wp-content\/uploads\/2016\/04\/algol-star-300x185.jpg 300w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/p>\n<p style=\"text-align: center;\"><a class=\"button button-orange medium arrow\" href=\"https:\/\/osr.org\">Bekijk Algol in 3D!<\/a><\/p>\n<h2><span style=\"color: #15acdf;\">Eigenschappen en feiten<\/span><\/h2>\n<p>Dit hemelwonder is de eerste verduisterende dubbelster die ooit is gevonden in ons universum. Algol wordt beschouwd als een drievoudig stersysteem waarbij Beta Persei A wordt verduisterd door Beta Persei B. Deze twee sterren hebben een schijnbare magnitude van 2,1 tot 3,4. De laatste ster in dit systeem is Beta Persei C. Deze ster is de zwakkere component van de drie sterren.<\/p>\n<h2><span style=\"color: #15acdf;\">Helderheid van de ster<\/span><\/h2>\n<p>De helderheid van Algol varieert. De verduisterende dubbelster heeft een cyclus van 2 dagen, 20 uur en 49 minuten. In deze cyclus wordt de helderheid van de ster regelmatig gedimd. Om deze reden lijkt het net alsof de ster knipoogt. Alledrie de sterren van Algol hebben een andere spectrale klasse; Beta Persei A is een B8V, Beta Persei B is een K0IV en Beta Persei C is een A5V. Algol\u2019s helderste ster is drie keer helderder dan wanneer zijn helderheid op het zwakst is.<\/p>\n<h2><span style=\"color: #15acdf;\">Geschiedenis en mythologie<\/span><\/h2>\n<p>Algol is een van de weinige sterren die een radiobron is. De radio-uitbarstingen komen van zogenaamde sterbevingen die door de nabije partner worden veroorzaakt. In de mythologie wordt Algol gebruikt om Medusa\u2019s hoofd met demonische slangen te vertegenwoordigen. Deze werden door Perseus gebruikt om het zeemonster Cetus in steen te veranderen. Sommigen geloven dat de veranderlijke sterren het oog van Medusa zijn. Hierdoor lijkt het alsof Medusa nog steeds kwaad is en met een duivelse intentie naar de aarde knipoogt.<\/p>\n<p><span class=\"blue-box\">Algol is niet zomaar een fonkelend hemellichaam, er zijn enkele harde feiten en bijzondere betekenissen bekend over deze ster. Als je de kans hebt om naar deze magische ster te kijken, doe dat dan zeker even.<\/span><\/p>\n<p style=\"text-align: center;\"><a class=\"button button-orange medium arrow\" href=\"https:\/\/osr.org\">Bekijk Algol in 3D!<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Stellaire omgeving De ster Algol bevindt zich in het sterrenbeeld Perseus op ongeveer 92,8 lichtjaar afstand van ons. Om deze drievoudige ster te lokaliseren moet je eerst de W of M vorm van constellatie Cassiopeia spotten aan de sterrenhemel. Als je vervolgens wat naar beneden kijkt zie je de ster Gamma Cassiopeia en Ruchbah. Dichtbij [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[444],"tags":[],"class_list":["post-169036","post","type-post","status-publish","format-standard","hentry","category-astronomie-nl"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>De populaire ster Algol - Bekende sterren - Online Star Register<\/title>\n<meta name=\"description\" content=\"Algol is een drievoudige ster, die regelmatig verduistert. Deze bekende ster bevindt zich in de constellatie Perseus. 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