{"id":8197,"date":"2020-12-20T14:43:14","date_gmt":"2020-12-20T13:43:14","guid":{"rendered":"http:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/?p=8197"},"modified":"2020-12-20T14:43:51","modified_gmt":"2020-12-20T13:43:51","slug":"conjuncio-planetaria-jupiter-saturn","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/portada\/conjuncio-planetaria-jupiter-saturn\/","title":{"rendered":"Conjunci\u00f3 Planet\u00e0ria J\u00fapiter Saturn"},"content":{"rendered":"<p>El professor Frederic Roquet-Jalmar, a m\u00e9s d&#8217;expert en qu\u00edmica \u00e9s expert en astronomia, ens explica que quan dos planetes (o una planeta i la Lluna) es veuen molt propers al cel es parla de conjunci\u00f3. \u00c9s un fenomen astron\u00f2mic\u00a0relativament habitual, per\u00f2 aquests dies es veu al cel una aproximaci\u00f3 entre J\u00fapiter i Saturn molt espectacular. La m\u00ednima dist\u00e0ncia tindr\u00e0 lloc el 21 de desembre d&#8217;enguany. Semblar\u00e0 com si els dos planetes se solapessin.<\/p>\n<p>Realment no estan tan junts. \u00c9s nom\u00e9s un efecte \u00f2ptic. \u00c9s visible a ull nu i durar\u00e0 uns quants dies.<\/p>\n<p>Saturn es troba per damunt i a l&#8217;esquerra de J\u00fapiter. I posteriorment al 21\/12, se separaran gradualment. De fet l&#8217;aproximaci\u00f3 d&#8217;enguany, tan sols de 6 minuts d&#8217;arc, no es donava des del 1623. Comentar, com a refer\u00e8ncia per a comparar, que la Lluna plena fa uns 30 minuts d&#8217;arc.<\/p>\n<p>Despr\u00e9s de la posta de Sol, quan ja fosqueja, mirant cap a l\u2019oest, heu de buscar dos punts brillants. No dura tota la nit, ja que els dos planetes es ponen uns minuts despr\u00e9s d\u2019arribar a la m\u00e0xima foscor del cel.<\/p>\n<p><a href=\"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-content\/uploads\/usu1174\/2020\/12\/roquet-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-8199\" src=\"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-content\/uploads\/usu1174\/2020\/12\/roquet-1-300x200.jpg\" alt=\"\" width=\"550\" height=\"366\" srcset=\"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-content\/uploads\/usu1174\/2020\/12\/roquet-1-300x200.jpg 300w, https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-content\/uploads\/usu1174\/2020\/12\/roquet-1-768x512.jpg 768w, https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-content\/uploads\/usu1174\/2020\/12\/roquet-1-1024x683.jpg 1024w, https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-content\/uploads\/usu1174\/2020\/12\/roquet-1.jpg 1299w\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" \/><\/a><\/p>\n<p>Aquest fenomen\u00a0t\u00e9 un inter\u00e8s did\u00e0ctic per diversos motius:<\/p>\n<p>&nbsp;<\/p>\n<p>* Es dona el dia m\u00e9s curt de l&#8217;any. Poc despr\u00e9s de la posta de Sol, a la seva esquerra, apareix un punt molt brillant i blanc, J\u00fapiter. Sembla una estrella enorme, per\u00f2 \u00e9s el planeta m\u00e9s\u00a0gran del Sistema\u00a0Solar. No est\u00e0 sol. Un altre punt m\u00e9s petit i menys brillant, l&#8217;acompanya. \u00c9s Saturn, el senyor dels anells.<\/p>\n<p>&nbsp;<\/p>\n<p>* No cal cap aparell \u00f2ptic per veure&#8217;l. Fins i tot, depenent de la capacitat visual de cada persona, pot fer la impressi\u00f3 que \u00e9s un \u00fanic\u00a0cos, quan realment s\u00f3n dos planetes molt junts.<\/p>\n<p>&nbsp;<\/p>\n<p>* \u00c9s una bona oportunitat per con\u00e8ixer i ensenyar\u00a0Saturn. Brilla menys<\/p>\n<p>que\u00a0J\u00fapiter i per tant des d&#8217;ambients urbans no \u00e9s f\u00e0cil de veure o localitzar.<\/p>\n<p>&nbsp;<\/p>\n<p>* Amb uns prism\u00e0tics senzills (7 x 50 o 10 x 50) la visi\u00f3 encara ser\u00e0 m\u00e9s espectacular.\u00a0Es veuran els sat\u00e8l\u00b7lits de J\u00fapiter, per\u00f2 no es distingiran els anells de Saturn.<\/p>\n<p>&nbsp;<\/p>\n<p>* J\u00fapiter es pot fotografiar amb un m\u00f2bil com els que tenen molts alumnes. I ampliant la imatge s&#8217;acabar\u00e0 intuint Saturn.<\/p>\n<p>&nbsp;<\/p>\n<p>* Amb una m\u00e0quina fotogr\u00e0fica digital de gamma mitjana i uns 10 \u2013 15 augments seria possible intuir els sat\u00e8l\u00b7lits de J\u00fapiter, els mateixos que va descobrir Galileu fa m\u00e9s de 400 anys.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Soc Saturn, el Senyor dels anells.<br \/>\nVaig vestit d&#8217;un groc senzill<br \/>\nper retrobar-me amb el meu fill<br \/>\namo i senyor de l&#8217;Olimp.<\/p>\n<p>Soc J\u00fapiter, D\u00e9u inmortal.<br \/>\nVaig vestit tot de blanc<br \/>\ni quan arriba el Nadal<br \/>\ncrido al meu pare estimat.<\/p>\n<p>Quan el Sol es pongui el dia m\u00e9s curt<br \/>\na l&#8217;esquerra de la posta ben just<br \/>\nabra\u00e7ant-se J\u00fapiter i Saturn<br \/>\nde dos D\u00e9us en farem un.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Foto del 12\/12\/2020 des de Tarragona. J\u00fapiter i Saturn s\u2019aproparan molt m\u00e9s que a la imatge.<\/p>\n<p>&nbsp;<\/p>\n<p>Per a m\u00e9s informaci\u00f3:<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/serviastro.ub.edu\/fenomens\/altres\/una-cada-vint-anys-conjuncio-de-jupiter-i-saturn\">https:\/\/serviastro.ub.edu\/fenomens\/altres\/una-cada-vint-anys-conjuncio-de-jupiter-i-saturn<\/a><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/federacionastronomica.es\/index.php\/actividades-y-eventos\/conjuncion-jupiter-saturno\">https:\/\/federacionastronomica.es\/index.php\/actividades-y-eventos\/conjuncion-jupiter-saturno<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>El professor Frederic Roquet-Jalmar, a m\u00e9s d&#8217;expert en qu\u00edmica \u00e9s expert en astronomia, ens explica que quan dos planetes (o una planeta i la Lluna) es veuen molt propers al cel es parla de conjunci\u00f3. \u00c9s un fenomen astron\u00f2mic\u00a0relativament habitual, per\u00f2 aquests dies es veu al cel una aproximaci\u00f3 entre J\u00fapiter i Saturn molt espectacular. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":8198,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[29],"tags":[],"class_list":["post-8197","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/posts\/8197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/comments?post=8197"}],"version-history":[{"count":1,"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/posts\/8197\/revisions"}],"predecessor-version":[{"id":8200,"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/posts\/8197\/revisions\/8200"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/media\/8198"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/media?parent=8197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/categories?post=8197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-ramonbarbat-vilaseca\/wp-json\/wp\/v2\/tags?post=8197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}