{"id":53494,"date":"2021-01-28T00:10:36","date_gmt":"2021-01-27T23:10:36","guid":{"rendered":"http:\/\/www.ocean4future.org\/savetheocean\/?p=53494"},"modified":"2026-07-12T16:05:16","modified_gmt":"2026-07-12T14:05:16","slug":"lesagono-invernale-di-paolo-giannetti","status":"publish","type":"post","link":"https:\/\/www.ocean4future.org\/savetheocean\/archives\/53494","title":{"rendered":"L&#8217;esagono invernale"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">tempo di lettura: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minuti<\/span><\/span><p><span style=\"color: #ffffff;\">.<\/span><\/p>\n<p><a class=\"maxbutton-4 maxbutton maxbutton-livello-di-comprensione\" href=\"javascript:void(0);\"><span class='mb-text'>livello elementare<\/span><\/a><br \/>\n<span style=\"color: #ffffff;\">.<\/span><br \/>\n<strong><span style=\"color: #008000;\">ARGOMENTO: ASTRONOMIA E NAUTICA<br \/>\nPERIODO: XXI SECOLO\u00a0<\/span><\/strong><br \/>\n<strong><span style=\"color: #008000;\">AREA: DIDATTICA<br \/>\n<\/span><\/strong>parole chiave: cielo stellato, riconoscimento stellare<br \/>\n<span style=\"color: #ffffff;\">.<\/span><\/p>\n<p style=\"text-align: justify;\">In queste notti invernali alcune stelle, tra le pi\u00f9 luminose del cielo, formano un enorme motivo a sei facce, chiamato <strong><span style=\"color: #008000;\">ESAGONO INVERNALE<\/span><\/strong>, visibile per quasi tutta la notte.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft\" src=\"https:\/\/www.ocean4future.org\/savetheocean\/wp-content\/uploads\/2021\/01\/esagono-stellare.jpg\" alt=\"Questa immagine ha l'attributo alt vuoto; il nome del file \u00e8 esagono-stellare.jpg\" width=\"630\" height=\"892\" \/><\/p>\n<p style=\"text-align: justify;\">La stella bianca molto luminosa che appare sull&#8217;orizzonte sud-orientale \u00e8 Sirio, nota come la &#8220;<strong><span style=\"color: #008000;\">stella del Cane Maggiore<\/span><\/strong>&#8220;. Dopo il Sole, <strong><span style=\"color: #008000;\">Sirio<\/span><\/strong> \u00e8 la stella pi\u00f9 luminosa di tutto il cielo. \u00c8 circa venticinque volte pi\u00f9 luminosa del nostro Sole, ma si trova a 8,6 anni luce di distanza! Nel suo moto astrale \u00e8 diretta verso di noi e quindi destinata a diventare sempre pi\u00f9 luminosa nei prossimi millenni! Muovendosi in senso antiorario, a destra di <strong><span style=\"color: #008000;\">Sirio<\/span><\/strong> c&#8217;\u00e8 la brillante stella blu <strong><span style=\"color: #008000;\">Rigel<\/span><\/strong>, che segna il &#8220;ginocchio&#8221; di Orione (il Cacciatore).<\/p>\n<p style=\"text-align: justify;\">Quasi tre pugni di diametro (25\u00b0) sopra Rigel troviamo <strong><span style=\"color: #008000;\">Aldebaran<\/span><\/strong>, la stella arancione nella <strong><span style=\"color: #008000;\">costellazione del Toro<\/span><\/strong> che abbiamo gi\u00e0 conosciuto in un altro articolo. Aldebaran \u00e8 una gigante rossa ed \u00e8 quaranta volte pi\u00f9 grande del nostro sole. Se proseguiamo ancora di tre pugni di diametro in alto, oltre Aldebaran, troveremo la brillante stella gialla <strong><span style=\"color: #008000;\">Capella<\/span><\/strong>, la &#8216;capra&#8217; nella costellazione dell&#8217;Auriga.<\/p>\n<p align=\"justify\"><strong><span style=\"color: #008000;\">l&#8217;esagono invernale con evidenziato il triangolo &#8211; Autore originale Simon Email: simonjastronomy@gmail.com &#8211; ricavato da <a href=\"http:\/\/simonjastronomy.blogspot.com\/2017\/03\/explore-universe-canis-minor.html\">Explore the Universe &#8211; Canis Minor | Northern Astronomy (simonjastronomy.blogspot.com)<\/a><\/span><\/strong><\/p>\n<p style=\"text-align: justify;\">Verso il basso e a sinistra di Capella incontriamo un paio di stelle luminose: i gemelli <strong><span style=\"color: #008000;\">Castore<\/span><\/strong> (superiore) e <strong><span style=\"color: #008000;\">Polluce<\/span><\/strong> (inferiore) nella <strong><span style=\"color: #008000;\">costellazione dei Gemelli<\/span><\/strong>.\u00a0Infine, osservando a met\u00e0 strada tra i gemelli e Sirio troviamo la luminosa stella blu-bianca <strong><span style=\"color: #008000;\">Procione<\/span><\/strong>, appartenente alla costellazione del Cane Minore che si trova a soli undici anni luce di distanza da noi. Infine, possiamo trasformare il nostro esagono in una lettera &#8220;<strong><span style=\"color: #008000;\">G<\/span><\/strong>&#8221; collegando Rigel alla stella luminosa e rossastra <span style=\"color: #008000;\"><strong>Betelgeuse,<\/strong> <\/span>che segna &#8220;la spalla di Orione&#8221;. Questa stella \u00e8 un vero gigante: pi\u00f9 di 600 volte pi\u00f9 grande del sole e si avvicina alla fine dei suoi giorni quando, in futuro, esploder\u00e0 trasformandosi in una supernova. Betelgeuse inizia a scorgersi bassa sull&#8217;orizzonte orientale nelle serate tardo-autunnali di inizio dicembre ed \u00e8 durante i mesi di gennaio e febbraio che l&#8217;astro domina il cielo notturno, essendo la stella di colore rosso vivo pi\u00f9 brillante dell&#8217;inverno.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" src=\"https:\/\/www.ocean4future.org\/savetheocean\/wp-content\/uploads\/2021\/01\/Winter-sky-esagono-e-triangolo.jpg\" alt=\"Questa immagine ha l'attributo alt vuoto; il nome del file \u00e8 Winter-sky-esagono-e-triangolo.jpg\" width=\"385\" height=\"442\" \/><\/p>\n<p style=\"text-align: justify;\">Il mese di maggio invece la vede tramontare definitivamente sotto l&#8217;orizzonte ovest, tra le luci del\u00a0crepuscolo ma torner\u00e0 ad essere visibile a est, poco prima dell&#8217;alba, nel mese di agosto.<\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 18pt;\"><strong><span style=\"color: #008000;\">Quando osservarlo<\/span><\/strong><\/span><br \/>\nL&#8217;esagono invernale sar\u00e0 visibile in questo periodo tutte le notti (nubi permettendo) dalle ore 20:00 circa e lo rimarr\u00e0 fino a circa met\u00e0 aprile. La <strong><span style=\"color: #008000;\">Via Lattea<\/span><\/strong> lo attraversa e la Luna e i pianeti vagano attraverso queste sei stelle mentre &#8220;migrano&#8221; lungo l&#8217;eclittica.<\/p>\n<p><strong><span style=\"color: #008000;\">Cieli sereni<\/span><\/strong><\/p>\n<p><strong><span style=\"color: #008000;\">Paolo Giannetti<\/span><\/strong><\/p>\n<p>in anteprima l&#8217;esagono invernale orientato per un pi\u00f9 facile ritrovamento <strong><a href=\"https:\/\/rasc-vancouver.com\/2018\/12\/20\/full-moon-trapped-in-the-winter-hexagon\/\">Full Moon Trapped in the Winter Hexagon \u2013 RASC Vancouver (rasc-vancouver.com)<\/a><\/strong><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">Alcune delle immagini possono essere state prese dal web, citandone ove possibile gli autori e\/o le fonti. Se qualcuno desiderasse specificarne l\u2019autore o rimuoverle, pu\u00f2 scrivere a infoocean4future@gmail.com e provvederemo immediatamente alla correzione dell\u2019articolo<\/p>\n<p>&nbsp;<\/p>\n<a class=\"maxbutton-3 maxbutton maxbutton-pagina-principale\" target=\"_blank\" title=\"tooltip\" rel=\"nofollow noopener\" href=\"http:\/\/www.ocean4future.org\"><span class='mb-text'>PAGINA PRINCIPALE<\/span><\/a>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">tempo di lettura: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minuti<\/span><\/span>. . ARGOMENTO: ASTRONOMIA E NAUTICA PERIODO: XXI SECOLO\u00a0 AREA: DIDATTICA parole chiave: cielo stellato, riconoscimento stellare . In queste notti invernali alcune stelle, tra le pi\u00f9 luminose del cielo, formano un enorme motivo a sei facce, chiamato ESAGONO INVERNALE, visibile per quasi tutta la notte. La stella bianca molto luminosa che appare sull&#8217;orizzonte sud-orientale [&hellip;]<\/p>\n","protected":false},"author":2392,"featured_media":53504,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[2296],"tags":[],"class_list":["post-53494","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomia-e-astrofisica"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>L&#039;esagono invernale &#8226; OCEAN4FUTURE autore<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ocean4future.org\/savetheocean\/archives\/53494\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L&#039;esagono invernale &#8226; OCEAN4FUTURE autore\" \/>\n<meta property=\"og:description\" content=\"tempo di lettura:  3 minuti. . ARGOMENTO: ASTRONOMIA E NAUTICA PERIODO: XXI SECOLO\u00a0 AREA: DIDATTICA parole chiave: cielo stellato, riconoscimento stellare . In queste notti invernali alcune stelle, tra le pi\u00f9 luminose del cielo, formano un enorme motivo a sei facce, chiamato ESAGONO INVERNALE, visibile per quasi tutta la notte. La stella bianca molto luminosa che appare sull&#8217;orizzonte sud-orientale [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ocean4future.org\/savetheocean\/archives\/53494\" \/>\n<meta property=\"og:site_name\" content=\"OCEAN4FUTURE\" \/>\n<meta property=\"article:published_time\" content=\"2021-01-27T23:10:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-12T14:05:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ocean4future.org\/savetheocean\/wp-content\/uploads\/2021\/01\/esagono-invernale-e1783865008214.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"779\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Paolo Giannetti\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ocean4future\" \/>\n<meta name=\"twitter:site\" content=\"@ocean4future\" \/>\n<meta name=\"twitter:label1\" content=\"Scritto da\" \/>\n\t<meta name=\"twitter:data1\" content=\"Paolo Giannetti\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo di lettura stimato\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minuti\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/archives\\\/53494#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/archives\\\/53494\"},\"author\":{\"name\":\"Paolo Giannetti\",\"@id\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/#\\\/schema\\\/person\\\/87ae78eb45ba9f4fa13a07f7b7a854d1\"},\"headline\":\"L&#8217;esagono invernale\",\"datePublished\":\"2021-01-27T23:10:36+00:00\",\"dateModified\":\"2026-07-12T14:05:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/archives\\\/53494\"},\"wordCount\":542,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/#\\\/schema\\\/person\\\/4e1c26437054353074d7bb2efa77162c\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/archives\\\/53494#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/wp-content\\\/uploads\\\/2021\\\/01\\\/esagono-invernale-e1783865008214.jpg\",\"articleSection\":[\"Astronomia e Astrofisica\"],\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/archives\\\/53494#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/archives\\\/53494\",\"url\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/archives\\\/53494\",\"name\":\"L'esagono invernale &#8226; 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Appassionato divulgatore ha creato Capitan Bitta, detto il \\\"Gianbibbiena\\\", un personaggio immaginario che racconta con brevi scritti curiosit\u00e0 di nautica, meteorologia e astronomia\",\"url\":\"https:\\\/\\\/www.ocean4future.org\\\/savetheocean\\\/archives\\\/author\\\/paolo-giannetti\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"L'esagono invernale &#8226; OCEAN4FUTURE autore","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.ocean4future.org\/savetheocean\/archives\/53494","og_locale":"it_IT","og_type":"article","og_title":"L'esagono invernale &#8226; OCEAN4FUTURE autore","og_description":"tempo di lettura:  3 minuti. . ARGOMENTO: ASTRONOMIA E NAUTICA PERIODO: XXI SECOLO\u00a0 AREA: DIDATTICA parole chiave: cielo stellato, riconoscimento stellare . 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