{"id":4272,"date":"2024-03-21T09:16:26","date_gmt":"2024-03-21T08:16:26","guid":{"rendered":"https:\/\/afvan.com\/?p=4272"},"modified":"2024-03-21T09:17:08","modified_gmt":"2024-03-21T08:17:08","slug":"cometa-12p-pons-brooks","status":"publish","type":"post","link":"https:\/\/afvan.com\/index.php\/2024\/03\/21\/cometa-12p-pons-brooks\/","title":{"rendered":"Cometa 12P\/pons-Brooks"},"content":{"rendered":"\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/afvan.com\/wp-content\/uploads\/2024\/03\/1920x1080.jpg\" alt=\"12p\/pons-brooks\" class=\"wp-image-4274\" style=\"width:697px;height:auto\" srcset=\"https:\/\/afvan.com\/wp-content\/uploads\/2024\/03\/1920x1080.jpg 1920w, https:\/\/afvan.com\/wp-content\/uploads\/2024\/03\/1920x1080-300x169.jpg 300w, https:\/\/afvan.com\/wp-content\/uploads\/2024\/03\/1920x1080-1024x576.jpg 1024w, https:\/\/afvan.com\/wp-content\/uploads\/2024\/03\/1920x1080-768x432.jpg 768w, https:\/\/afvan.com\/wp-content\/uploads\/2024\/03\/1920x1080-1536x864.jpg 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-columns alignfull is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-center has-ast-global-color-2-color has-text-color has-large-font-size\" style=\"margin-top:0rem;margin-right:0rem;margin-bottom:0rem;margin-left:0rem;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;line-height:2\">12P\/Pons-Brooks<\/p>\n\n\n\n<p><em>21\/03\/2024<\/em><\/p>\n\n\n\n<p>12P\/Pons-Brooks \u00e9s un estel peri\u00f2dic descobert el 1812 de forma independent pels astr\u00f2noms francesos Jean-Louis Pons, el 20 de juliol, Alexis Bouvard, l&#8217;1 d&#8217;agost, i pel rus Vincent Wisniewsky el 30 de juliol; i recuperat l&#8217;1 de setembre de 1883 mesos abans del seu seg\u00fcent pas pel periheli, el 24 de gener de 1884, pel nord-americ\u00e0 William Robert Brooks,2 rebent el nom dels seus primers observadors en aquests primers passos pel periheli. T\u00e9 un per\u00edode orbital de 70 anys pel que segons la classificaci\u00f3 cl\u00e0ssica, \u00e9s un estel de tipus Halley.<br>El 7 de juliol de 2020 va ser anunciada la seva recuperaci\u00f3, pr\u00e8via al proper pas pel periheli, per a 21 d&#8217;abril de 2024 amb l&#8217;acostament m\u00e9s proper a la Terra a 1,54 UA (230 milions de km) el 2 de juny del 2024.<\/p>\n\n\n\n<p><strong>Observacions hist\u00f2riques<\/strong><br>A partir dels c\u00e0lculs d&#8217;\u00f2rbites que l&#8217;astr\u00f2nom itali\u00e0 Giovanni Celoria va publicar el 18844 dels albiraments d&#8217;estels realitzats i registrats per Paolo dal Pozzo Toscanelli al segle xv i conservats en un manuscrit trobat el 1864 a la Biblioteca Nacional Central de Flor\u00e8ncia, s&#8217;ha pogut identificar aquest estel amb l&#8217;avistat per Tosanelli entre els dies 23 i 27 de gener de 1457, denominat C\/1457 A1, i que va poder assolir una magnitud de 3 o 4. A m\u00e9s d&#8217;aquesta observaci\u00f3, tamb\u00e9 una font xinesa informa del albirament el 14 de gener d&#8217;aquell any encara que en una posici\u00f3 m\u00e9s allunyada de la donada per Toscanelli. Es va suggerir per a aquest estel de 1457 la identitat amb 27P\/Crommelin per\u00f2 c\u00e0lculs moderns ho han descartat.<br>Un altre estel amb qu\u00e8 se l&#8217;ha identificat \u00e9s amb l&#8217;avistat entre finals d&#8217;octubre i finals de novembre de 1385, denominat C\/1385 U1, del qual nom\u00e9s hi ha registre en fonts xineses, i que va poder assolir la magnitud 2.5<br><br><strong>Refer\u00e8ncies<\/strong><br>\u00ab12P\/Pons-Brooks\u00bb (en angl\u00e8s). Jet Propulsion Laboratory. Consultat l&#8217;1 de desembre del 2020.<br>Schulhof, L.; Bossert, J. (1884). \u00abM\u00e9moires et observations. La com\u00e8te de 1812 (Pons-Brooks) d\u00f3na l&#8217;apparition de 1883-1884\u00bb. A Observatori de Par\u00eds, ed. Bulletin Astronomique (en franc\u00e8s) I (1): 24-30. Bibcode:1884BuAsI\u20261\u202624S. Consultat l&#8217;1 de desembre del 2020.<br>Ye, Q.; Farnham, T.; et al. (7 de juliol de 2020). &#8220;Recovery of Returning Halley-Type Comet 12P\/Pons-Brooks With the Lowell Discovery Telescope&#8221;. A The American Astronomical Society, ed. Research Notes of the AAS (en angl\u00e8s) 4 (7). Bibcode:2020RNAAS\u20264..101Y. ISSN 2515-5172. doi:10.3847\/2515-5172\/aba2d1. Consultat l&#8217;1 de desembre del 2020.<br>Celoria, G. (octubre de 1884). \u00abComet del 1457\u00bb. Astronomische Nachrichten (en itali\u00e0) 110 (10): 171. Bibcode:1884AN\u2026.110..171C. doi:10.1002\/asna.18841101003.<br>Meyer, M.; et al. (1 de gener de 2021). \u00abComet 12P\/Pons-Brooks: Identification with Comets C\/1385 U1 i C\/1457 A1\u00bb. A International Comet Quarterly, ed. eprint arXiv:2012.15583 (en angl\u00e8s). Bibcode:2020arXiv201215583M. Consultat el 15 de febrer de 2021.<br>\u2191 \u00ab12P\/Pons-Brooks\u00bb. cometography.com. Consultat el 22 de juliol de 2023.<br>\u00abAproximaci\u00f3 m\u00e9s propera a la Terra el 2 de juny del 2024 (interval d&#8217;1 hora)\u00bb.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<div class=\"pvc_clear\"><\/div><p id=\"pvc_stats_4272\" class=\"pvc_stats all  \" data-element-id=\"4272\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" version=\"1.0\" viewBox=\"0 0 502 315\" preserveAspectRatio=\"xMidYMid meet\"><g transform=\"translate(0,332) scale(0.1,-0.1)\" fill=\"\" stroke=\"none\"><path d=\"M2394 3279 l-29 -30 -3 -207 c-2 -182 0 -211 15 -242 39 -76 157 -76 196 0 15 31 17 60 15 243 l-3 209 -33 29 c-26 23 -41 29 -80 29 -41 0 -53 -5 -78 -31z\"\/><path d=\"M3085 3251 c-45 -19 -58 -50 -96 -229 -47 -217 -49 -260 -13 -295 52 -53 146 -42 177 20 16 31 87 366 87 410 0 70 -86 122 -155 94z\"\/><path d=\"M1751 3234 c-13 -9 -29 -31 -37 -50 -12 -29 -10 -49 21 -204 19 -94 39 -189 45 -210 14 -50 54 -80 110 -80 34 0 48 6 76 34 21 21 34 44 34 59 0 14 -18 113 -40 219 -37 178 -43 195 -70 221 -36 32 -101 37 -139 11z\"\/><path d=\"M1163 3073 c-36 -7 -73 -59 -73 -102 0 -56 133 -378 171 -413 34 -32 83 -37 129 -13 70 36 67 87 -16 290 -86 209 -89 214 -129 231 -35 14 -42 15 -82 7z\"\/><path d=\"M3689 3066 c-15 -9 -33 -30 -42 -48 -48 -103 -147 -355 -147 -375 0 -98 131 -148 192 -74 13 15 57 108 97 206 80 196 84 226 37 273 -30 30 -99 39 -137 18z\"\/><path d=\"M583 2784 c-38 -19 -67 -74 -58 -113 9 -42 211 -354 242 -373 16 -10 45 -18 66 -18 51 0 107 52 107 100 0 39 -1 41 -124 234 -80 126 -108 162 -133 173 -41 17 -61 16 -100 -3z\"\/><path d=\"M4250 2784 c-14 -9 -74 -91 -133 -183 -95 -150 -107 -173 -107 -213 0 -55 33 -94 87 -104 67 -13 90 8 211 198 130 202 137 225 78 284 -27 27 -42 34 -72 34 -22 0 -50 -8 -64 -16z\"\/><path d=\"M2275 2693 c-553 -48 -1095 -270 -1585 -649 -135 -104 -459 -423 -483 -476 -23 -49 -22 -139 2 -186 73 -142 361 -457 571 -626 285 -228 642 -407 990 -497 242 -63 336 -73 660 -74 310 0 370 5 595 52 535 111 1045 392 1455 803 122 121 250 273 275 326 19 41 19 137 0 174 -41 79 -309 363 -465 492 -447 370 -946 591 -1479 653 -113 14 -422 18 -536 8z m395 -428 c171 -34 330 -124 456 -258 112 -119 167 -219 211 -378 27 -96 24 -300 -5 -401 -72 -255 -236 -447 -474 -557 -132 -62 -201 -76 -368 -76 -167 0 -236 14 -368 76 -213 98 -373 271 -451 485 -162 444 86 934 547 1084 153 49 292 57 452 25z m909 -232 c222 -123 408 -262 593 -441 76 -74 138 -139 138 -144 0 -16 -233 -242 -330 -319 -155 -123 -309 -223 -461 -299 l-81 -41 32 46 c18 26 49 83 70 128 143 306 141 649 -6 957 -25 52 -61 116 -79 142 l-34 47 45 -20 c26 -10 76 -36 113 -56z m-2057 25 c-40 -58 -105 -190 -130 -263 -110 -324 -59 -707 132 -981 25 -35 42 -64 37 -64 -19 0 -241 119 -326 174 -188 122 -406 314 -532 468 l-58 71 108 103 c185 178 428 349 672 473 66 33 121 60 123 61 2 0 -10 -19 -26 -42z\"\/><path d=\"M2375 1950 c-198 -44 -350 -190 -395 -379 -18 -76 -8 -221 19 -290 114 -284 457 -406 731 -260 98 52 188 154 231 260 27 69 37 214 19 290 -38 163 -166 304 -326 360 -67 23 -215 33 -279 19z\"\/><\/g><\/svg><\/i> <img decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/afvan.com\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p><div class=\"pvc_clear\"><\/div>","protected":false},"excerpt":{"rendered":"<p>12P\/Pons-Brooks 21\/03\/2024 12P\/Pons-Brooks \u00e9s un estel peri\u00f2dic descobert el 1812 de forma independent pels astr\u00f2noms francesos Jean-Louis Pons, el 20 de juliol, Alexis Bouvard, l&#8217;1 d&#8217;agost, i pel rus Vincent Wisniewsky el 30 de juliol; i recuperat l&#8217;1 de setembre de 1883 mesos abans del seu seg\u00fcent pas pel periheli, el 24 de gener de 1884, pel nord-americ\u00e0 William Robert Brooks,2 rebent el nom dels seus primers observadors en aquests primers passos pel periheli. T\u00e9 un per\u00edode orbital de 70 anys pel que segons la classificaci\u00f3 cl\u00e0ssica, \u00e9s un estel de tipus Halley.El 7 de juliol de 2020 va ser anunciada la seva recuperaci\u00f3, pr\u00e8via al proper pas pel periheli, per a 21 d&#8217;abril de 2024 amb l&#8217;acostament m\u00e9s proper a la Terra a 1,54 UA (230 milions de km) el 2 de juny del 2024. Observacions hist\u00f2riquesA partir dels c\u00e0lculs d&#8217;\u00f2rbites que l&#8217;astr\u00f2nom itali\u00e0 Giovanni Celoria va publicar el 18844 dels albiraments d&#8217;estels realitzats i registrats per Paolo dal Pozzo Toscanelli al segle xv i conservats en un manuscrit trobat el 1864 a la Biblioteca Nacional Central de Flor\u00e8ncia, s&#8217;ha pogut identificar aquest estel amb l&#8217;avistat per Tosanelli entre els dies 23 i 27 de gener de 1457, denominat C\/1457 A1, i que va poder assolir una magnitud de 3 o 4. A m\u00e9s d&#8217;aquesta observaci\u00f3, tamb\u00e9 una font xinesa informa del albirament el 14 de gener d&#8217;aquell any encara que en una posici\u00f3 m\u00e9s allunyada de la donada per Toscanelli. Es va suggerir per a aquest estel de 1457 la identitat amb 27P\/Crommelin per\u00f2 c\u00e0lculs moderns ho han descartat.Un altre estel amb qu\u00e8 se l&#8217;ha identificat \u00e9s amb l&#8217;avistat entre finals d&#8217;octubre i finals de novembre de 1385, denominat C\/1385 U1, del qual nom\u00e9s hi ha registre en fonts xineses, i que va poder assolir la magnitud 2.5 Refer\u00e8ncies\u00ab12P\/Pons-Brooks\u00bb (en angl\u00e8s). Jet Propulsion Laboratory. Consultat l&#8217;1 de desembre del 2020.Schulhof, L.; Bossert, J. (1884). \u00abM\u00e9moires et observations. La com\u00e8te de 1812 (Pons-Brooks) d\u00f3na l&#8217;apparition de 1883-1884\u00bb. A Observatori de Par\u00eds, ed. Bulletin Astronomique (en franc\u00e8s) I (1): 24-30. Bibcode:1884BuAsI\u20261\u202624S. Consultat l&#8217;1 de desembre del 2020.Ye, Q.; Farnham, T.; et al. (7 de juliol de 2020). &#8220;Recovery of Returning Halley-Type Comet 12P\/Pons-Brooks With the Lowell Discovery Telescope&#8221;. A The American Astronomical Society, ed. Research Notes of the AAS (en angl\u00e8s) 4 (7). Bibcode:2020RNAAS\u20264..101Y. ISSN 2515-5172. doi:10.3847\/2515-5172\/aba2d1. Consultat l&#8217;1 de desembre del 2020.Celoria, G. (octubre de 1884). \u00abComet del 1457\u00bb. Astronomische Nachrichten (en itali\u00e0) 110 (10): 171. Bibcode:1884AN\u2026.110..171C. doi:10.1002\/asna.18841101003.Meyer, M.; et al. (1 de gener de 2021). \u00abComet 12P\/Pons-Brooks: Identification with Comets C\/1385 U1 i C\/1457 A1\u00bb. A International Comet Quarterly, ed. eprint arXiv:2012.15583 (en angl\u00e8s). Bibcode:2020arXiv201215583M. Consultat el 15 de febrer de 2021.\u2191 \u00ab12P\/Pons-Brooks\u00bb. cometography.com. Consultat el 22 de juliol de 2023.\u00abAproximaci\u00f3 m\u00e9s propera a la Terra el 2 de juny del 2024 (interval d&#8217;1 hora)\u00bb.<\/p>\n","protected":false},"author":1,"featured_media":4274,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"quote","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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":[7,12],"tags":[],"class_list":["post-4272","post","type-post","status-publish","format-quote","has-post-thumbnail","hentry","category-astrofotografia","category-fotografia","post_format-post-format-quote"],"aioseo_notices":[],"a3_pvc":{"activated":true,"total_views":22,"today_views":0},"_links":{"self":[{"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/posts\/4272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/comments?post=4272"}],"version-history":[{"count":3,"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/posts\/4272\/revisions"}],"predecessor-version":[{"id":4276,"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/posts\/4272\/revisions\/4276"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/media\/4274"}],"wp:attachment":[{"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/media?parent=4272"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/categories?post=4272"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afvan.com\/index.php\/wp-json\/wp\/v2\/tags?post=4272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}