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logge inn, men det er ikke obligatorisk [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logg inn</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Nettsted"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Tilsynelatende størrelsesklasse</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Gå til en artikkel på et annet språk. Tilgjengelig på 75 språk" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-75" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">75 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Tilsynelatande_storleiksklasse" title="Tilsynelatande storleiksklasse – norsk nynorsk" lang="nn" hreflang="nn" data-title="Tilsynelatande storleiksklasse" data-language-autonym="Norsk nynorsk" data-language-local-name="norsk nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Skenbar_magnitud" title="Skenbar magnitud – svensk" lang="sv" hreflang="sv" data-title="Skenbar magnitud" data-language-autonym="Svenska" data-language-local-name="svensk" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Scheinbare_Helligkeit" title="Scheinbare Helligkeit – sveitsertysk" lang="gsw" hreflang="gsw" data-title="Scheinbare Helligkeit" data-language-autonym="Alemannisch" data-language-local-name="sveitsertysk" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%82%D8%AF%D8%B1_%D8%B8%D8%A7%D9%87%D8%B1%D9%8A" title="قدر ظاهري – arabisk" lang="ar" hreflang="ar" data-title="قدر ظاهري" data-language-autonym="العربية" data-language-local-name="arabisk" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Magnit%C3%BA_aparente" title="Magnitú aparente – asturisk" lang="ast" hreflang="ast" data-title="Magnitú aparente" data-language-autonym="Asturianu" data-language-local-name="asturisk" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/G%C3%B6r%C3%BCn%C9%99n_ulduz_%C3%B6l%C3%A7%C3%BCs%C3%BC" title="Görünən ulduz ölçüsü – aserbajdsjansk" lang="az" hreflang="az" data-title="Görünən ulduz ölçüsü" data-language-autonym="Azərbaycanca" data-language-local-name="aserbajdsjansk" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%86%E0%A6%AA%E0%A6%BE%E0%A6%A4_%E0%A6%AE%E0%A6%BE%E0%A6%A8" title="আপাত মান – bengali" lang="bn" hreflang="bn" data-title="আপাত মান" data-language-autonym="বাংলা" data-language-local-name="bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%91%D0%B0%D1%87%D0%BD%D0%B0%D1%8F_%D0%B7%D0%BE%D1%80%D0%BD%D0%B0%D1%8F_%D0%B2%D0%B5%D0%BB%D1%96%D1%87%D1%8B%D0%BD%D1%8F" title="Бачная зорная велічыня – belarusisk" lang="be" hreflang="be" data-title="Бачная зорная велічыня" data-language-autonym="Беларуская" data-language-local-name="belarusisk" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%92%D0%B8%D0%B4%D0%B8%D0%BC%D0%B0_%D0%B7%D0%B2%D0%B5%D0%B7%D0%B4%D0%BD%D0%B0_%D0%B2%D0%B5%D0%BB%D0%B8%D1%87%D0%B8%D0%BD%D0%B0" title="Видима звездна величина – bulgarsk" lang="bg" hreflang="bg" data-title="Видима звездна величина" data-language-autonym="Български" data-language-local-name="bulgarsk" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Prividna_magnituda" title="Prividna magnituda – bosnisk" lang="bs" hreflang="bs" data-title="Prividna magnituda" data-language-autonym="Bosanski" data-language-local-name="bosnisk" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Magnitud_aparent" title="Magnitud aparent – katalansk" lang="ca" hreflang="ca" data-title="Magnitud aparent" data-language-autonym="Català" data-language-local-name="katalansk" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Hv%C4%9Bzdn%C3%A1_velikost" title="Hvězdná velikost – tsjekkisk" lang="cs" hreflang="cs" data-title="Hvězdná velikost" data-language-autonym="Čeština" data-language-local-name="tsjekkisk" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Scheinbare_Helligkeit" title="Scheinbare Helligkeit – tysk" lang="de" hreflang="de" data-title="Scheinbare Helligkeit" data-language-autonym="Deutsch" data-language-local-name="tysk" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/T%C3%A4hesuurus" title="Tähesuurus – estisk" lang="et" hreflang="et" data-title="Tähesuurus" data-language-autonym="Eesti" data-language-local-name="estisk" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A6%CE%B1%CE%B9%CE%BD%CF%8C%CE%BC%CE%B5%CE%BD%CE%BF_%CE%BC%CE%AD%CE%B3%CE%B5%CE%B8%CE%BF%CF%82" title="Φαινόμενο μέγεθος – gresk" lang="el" hreflang="el" data-title="Φαινόμενο μέγεθος" data-language-autonym="Ελληνικά" data-language-local-name="gresk" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Apparent_magnitude" title="Apparent magnitude – engelsk" lang="en" hreflang="en" data-title="Apparent magnitude" data-language-autonym="English" data-language-local-name="engelsk" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Magnitud_aparente" title="Magnitud aparente – spansk" lang="es" hreflang="es" data-title="Magnitud aparente" data-language-autonym="Español" data-language-local-name="spansk" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/%C5%9Cajna_magnitudo" title="Ŝajna magnitudo – esperanto" lang="eo" hreflang="eo" data-title="Ŝajna magnitudo" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Itxurazko_magnitude" title="Itxurazko magnitude – baskisk" lang="eu" hreflang="eu" data-title="Itxurazko magnitude" data-language-autonym="Euskara" data-language-local-name="baskisk" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%82%D8%AF%D8%B1_%D8%B8%D8%A7%D9%87%D8%B1%DB%8C" title="قدر ظاهری – persisk" lang="fa" hreflang="fa" data-title="قدر ظاهری" data-language-autonym="فارسی" data-language-local-name="persisk" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Magnitude_apparente" title="Magnitude apparente – fransk" lang="fr" hreflang="fr" data-title="Magnitude apparente" data-language-autonym="Français" data-language-local-name="fransk" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Magnitude_aparente" title="Magnitude aparente – galisisk" lang="gl" hreflang="gl" data-title="Magnitude aparente" data-language-autonym="Galego" data-language-local-name="galisisk" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EA%B2%89%EB%B3%B4%EA%B8%B0%EB%93%B1%EA%B8%89" title="겉보기등급 – koreansk" lang="ko" hreflang="ko" data-title="겉보기등급" data-language-autonym="한국어" data-language-local-name="koreansk" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8F%D5%A5%D5%BD%D5%A1%D5%B6%D5%A5%D5%AC%D5%AB_%D5%A1%D5%BD%D5%BF%D5%B2%D5%A1%D5%B5%D5%AB%D5%B6_%D5%B4%D5%A5%D5%AE%D5%B8%D6%82%D5%A9%D5%B5%D5%B8%D6%82%D5%B6" title="Տեսանելի աստղային մեծություն – armensk" lang="hy" hreflang="hy" data-title="Տեսանելի աստղային մեծություն" data-language-autonym="Հայերեն" data-language-local-name="armensk" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A4%BE%E0%A4%AA%E0%A5%87%E0%A4%95%E0%A5%8D%E0%A4%B7_%E0%A4%95%E0%A4%BE%E0%A4%82%E0%A4%A4%E0%A4%BF%E0%A4%AE%E0%A4%BE%E0%A4%A8" title="सापेक्ष कांतिमान – hindi" lang="hi" hreflang="hi" data-title="सापेक्ष कांतिमान" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Prividna_magnituda" title="Prividna magnituda – kroatisk" lang="hr" hreflang="hr" data-title="Prividna magnituda" data-language-autonym="Hrvatski" data-language-local-name="kroatisk" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Magnitudo_semu" title="Magnitudo semu – indonesisk" lang="id" hreflang="id" data-title="Magnitudo semu" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesisk" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Magnitude_apparente" title="Magnitude apparente – interlingua" lang="ia" hreflang="ia" data-title="Magnitude apparente" data-language-autonym="Interlingua" data-language-local-name="interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Magnitudine_apparente" title="Magnitudine apparente – italiensk" lang="it" hreflang="it" data-title="Magnitudine apparente" data-language-autonym="Italiano" data-language-local-name="italiensk" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%91%D7%94%D7%99%D7%A8%D7%95%D7%AA_%D7%A0%D7%A8%D7%90%D7%99%D7%AA" title="בהירות נראית – hebraisk" lang="he" hreflang="he" data-title="בהירות נראית" data-language-autonym="עברית" data-language-local-name="hebraisk" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%95%E1%83%90%E1%83%A0%E1%83%A1%E1%83%99%E1%83%95%E1%83%9A%E1%83%90%E1%83%95%E1%83%98%E1%83%94%E1%83%A0%E1%83%98_%E1%83%A1%E1%83%98%E1%83%93%E1%83%98%E1%83%93%E1%83%94" title="ვარსკვლავიერი სიდიდე – georgisk" lang="ka" hreflang="ka" data-title="ვარსკვლავიერი სიდიდე" data-language-autonym="ქართული" data-language-local-name="georgisk" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Mwangaza_unaoonekana" title="Mwangaza unaoonekana – swahili" lang="sw" hreflang="sw" data-title="Mwangaza unaoonekana" data-language-autonym="Kiswahili" data-language-local-name="swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Mayitid_aparan" title="Mayitid aparan – haitisk" lang="ht" hreflang="ht" data-title="Mayitid aparan" data-language-autonym="Kreyòl ayisyen" data-language-local-name="haitisk" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Qedra_zahir%C3%AE" title="Qedra zahirî – kurdisk" lang="ku" hreflang="ku" data-title="Qedra zahirî" data-language-autonym="Kurdî" data-language-local-name="kurdisk" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Magnitudo_apparens" title="Magnitudo apparens – latin" lang="la" hreflang="la" data-title="Magnitudo apparens" data-language-autonym="Latina" data-language-local-name="latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Redzamais_spo%C5%BEums" title="Redzamais spožums – latvisk" lang="lv" hreflang="lv" data-title="Redzamais spožums" data-language-autonym="Latviešu" data-language-local-name="latvisk" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Visuell_Magnitude" title="Visuell Magnitude – luxemburgsk" lang="lb" hreflang="lb" data-title="Visuell Magnitude" data-language-autonym="Lëtzebuergesch" data-language-local-name="luxemburgsk" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Regimasis_ry%C5%A1kis" title="Regimasis ryškis – litauisk" lang="lt" hreflang="lt" data-title="Regimasis ryškis" data-language-autonym="Lietuvių" data-language-local-name="litauisk" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Magnit%C3%BAd%C3%B3" title="Magnitúdó – ungarsk" lang="hu" hreflang="hu" data-title="Magnitúdó" data-language-autonym="Magyar" data-language-local-name="ungarsk" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9F%D1%80%D0%B8%D0%B2%D0%B8%D0%B4%D0%BD%D0%B0_%D1%95%D0%B2%D0%B5%D0%B7%D0%B4%D0%B5%D0%BD%D0%B0_%D0%B2%D0%B5%D0%BB%D0%B8%D1%87%D0%B8%D0%BD%D0%B0" title="Привидна ѕвездена величина – makedonsk" lang="mk" hreflang="mk" data-title="Привидна ѕвездена величина" data-language-autonym="Македонски" data-language-local-name="makedonsk" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%A6%E0%B5%83%E0%B4%B6%E0%B5%8D%E0%B4%AF%E0%B4%95%E0%B4%BE%E0%B4%A8%E0%B5%8D%E0%B4%A4%E0%B4%BF%E0%B4%AE%E0%B4%BE%E0%B4%A8%E0%B4%82" title="ദൃശ്യകാന്തിമാനം – malayalam" lang="ml" hreflang="ml" data-title="ദൃശ്യകാന്തിമാനം" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%86%E0%A4%AD%E0%A4%BE%E0%A4%B8%E0%A5%80_%E0%A4%A6%E0%A5%83%E0%A4%B6%E0%A5%8D%E0%A4%AF%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%A4" title="आभासी दृश्यप्रत – marathi" lang="mr" hreflang="mr" data-title="आभासी दृश्यप्रत" data-language-autonym="मराठी" data-language-local-name="marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Magnitud_ketara" title="Magnitud ketara – malayisk" lang="ms" hreflang="ms" data-title="Magnitud ketara" data-language-autonym="Bahasa Melayu" data-language-local-name="malayisk" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl badge-Q70894304 mw-list-item" title=""><a href="https://nl.wikipedia.org/wiki/Schijnbare_magnitude" title="Schijnbare magnitude – nederlandsk" lang="nl" hreflang="nl" data-title="Schijnbare magnitude" data-language-autonym="Nederlands" data-language-local-name="nederlandsk" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E8%A6%8B%E3%81%8B%E3%81%91%E3%81%AE%E7%AD%89%E7%B4%9A" title="見かけの等級 – japansk" lang="ja" hreflang="ja" data-title="見かけの等級" data-language-autonym="日本語" data-language-local-name="japansk" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Skiinboor_magnituud" title="Skiinboor magnituud – nordfrisisk" lang="frr" hreflang="frr" data-title="Skiinboor magnituud" data-language-autonym="Nordfriisk" data-language-local-name="nordfrisisk" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Magnitud_aparenta" title="Magnitud aparenta – oksitansk" lang="oc" hreflang="oc" data-title="Magnitud aparenta" data-language-autonym="Occitan" data-language-local-name="oksitansk" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Hamma_gonkaa" title="Hamma gonkaa – oromo" lang="om" hreflang="om" data-title="Hamma gonkaa" data-language-autonym="Oromoo" data-language-local-name="oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Ko%CA%BBrinma_yulduz_kattaligi" title="Koʻrinma yulduz kattaligi – usbekisk" lang="uz" hreflang="uz" data-title="Koʻrinma yulduz kattaligi" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="usbekisk" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%B8%E0%A8%BE%E0%A8%AA%E0%A9%87%E0%A8%96_%E0%A8%95%E0%A8%BE%E0%A8%82%E0%A8%A4%E0%A9%80%E0%A8%AE%E0%A8%BE%E0%A8%A8" title="ਸਾਪੇਖ ਕਾਂਤੀਮਾਨ – panjabi" lang="pa" hreflang="pa" data-title="ਸਾਪੇਖ ਕਾਂਤੀਮਾਨ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="panjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Obserwowana_wielko%C5%9B%C4%87_gwiazdowa" title="Obserwowana wielkość gwiazdowa – polsk" lang="pl" hreflang="pl" data-title="Obserwowana wielkość gwiazdowa" data-language-autonym="Polski" data-language-local-name="polsk" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Magnitude_aparente" title="Magnitude aparente – portugisisk" lang="pt" hreflang="pt" data-title="Magnitude aparente" data-language-autonym="Português" data-language-local-name="portugisisk" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Magnitudine_aparent%C4%83" title="Magnitudine aparentă – rumensk" lang="ro" hreflang="ro" data-title="Magnitudine aparentă" data-language-autonym="Română" data-language-local-name="rumensk" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%92%D0%B8%D0%B4%D0%B8%D0%BC%D0%B0%D1%8F_%D0%B7%D0%B2%D1%91%D0%B7%D0%B4%D0%BD%D0%B0%D1%8F_%D0%B2%D0%B5%D0%BB%D0%B8%D1%87%D0%B8%D0%BD%D0%B0" title="Видимая звёздная величина – russisk" lang="ru" hreflang="ru" data-title="Видимая звёздная величина" data-language-autonym="Русский" data-language-local-name="russisk" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Magnit%C3%B9dini_apparenti" title="Magnitùdini apparenti – siciliansk" lang="scn" hreflang="scn" data-title="Magnitùdini apparenti" data-language-autonym="Sicilianu" data-language-local-name="siciliansk" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%AF%E0%B7%98%E0%B7%81%E0%B7%8A%E2%80%8D%E0%B6%BA_%E0%B7%80%E0%B7%92%E0%B7%81%E0%B7%8F%E0%B6%BD%E0%B6%AD%E0%B7%8A%E0%B7%80%E0%B6%BA" title="දෘශ්‍ය විශාලත්වය – singalesisk" lang="si" hreflang="si" data-title="දෘශ්‍ය විශාලත්වය" data-language-autonym="සිංහල" data-language-local-name="singalesisk" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Magnitude_(astronomy)" title="Magnitude (astronomy) – enkel engelsk" lang="en-simple" hreflang="en-simple" data-title="Magnitude (astronomy)" data-language-autonym="Simple English" data-language-local-name="enkel engelsk" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Zdanliv%C3%A1_hviezdna_ve%C4%BEkos%C5%A5" title="Zdanlivá hviezdna veľkosť – slovakisk" lang="sk" hreflang="sk" data-title="Zdanlivá hviezdna veľkosť" data-language-autonym="Slovenčina" data-language-local-name="slovakisk" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Navidezni_sij" title="Navidezni sij – slovensk" lang="sl" hreflang="sl" data-title="Navidezni sij" data-language-autonym="Slovenščina" data-language-local-name="slovensk" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9F%D1%80%D0%B8%D0%B2%D0%B8%D0%B4%D0%BD%D0%B0_%D0%B7%D0%B2%D0%B5%D0%B7%D0%B4%D0%B0%D0%BD%D0%B0_%D0%B2%D0%B5%D0%BB%D0%B8%D1%87%D0%B8%D0%BD%D0%B0" title="Привидна звездана величина – serbisk" lang="sr" hreflang="sr" data-title="Привидна звездана величина" data-language-autonym="Српски / srpski" data-language-local-name="serbisk" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Prividna_magnituda" title="Prividna magnituda – serbokroatisk" lang="sh" hreflang="sh" data-title="Prividna magnituda" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbokroatisk" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Magnitudi_(t%C3%A4htitiede)" title="Magnitudi (tähtitiede) – finsk" lang="fi" hreflang="fi" data-title="Magnitudi (tähtitiede)" data-language-autonym="Suomi" data-language-local-name="finsk" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Maliwanag_na_kalakhan" title="Maliwanag na kalakhan – tagalog" lang="tl" hreflang="tl" data-title="Maliwanag na kalakhan" data-language-autonym="Tagalog" data-language-local-name="tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%A4%E0%AF%8B%E0%AE%B1%E0%AF%8D%E0%AE%B1_%E0%AE%92%E0%AE%B3%E0%AE%BF%E0%AE%AA%E0%AF%8D%E0%AE%AA%E0%AF%8A%E0%AE%B2%E0%AE%BF%E0%AE%B5%E0%AF%86%E0%AE%A3%E0%AF%8D" title="தோற்ற ஒளிப்பொலிவெண் – tamil" lang="ta" hreflang="ta" data-title="தோற்ற ஒளிப்பொலிவெண்" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Azal_amaskad" title="Azal amaskad – kabylsk" lang="kab" hreflang="kab" data-title="Azal amaskad" data-language-autonym="Taqbaylit" data-language-local-name="kabylsk" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%99%D0%BE%D0%BB%D0%B4%D1%8B%D0%B7%D1%87%D0%B0_%D0%B7%D1%83%D1%80%D0%BB%D1%8B%D0%BA" title="Йолдызча зурлык – tatarisk" lang="tt" hreflang="tt" data-title="Йолдызча зурлык" data-language-autonym="Татарча / tatarça" data-language-local-name="tatarisk" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%82%E0%B8%8A%E0%B8%95%E0%B8%B4%E0%B8%A1%E0%B8%B2%E0%B8%95%E0%B8%A3%E0%B8%9B%E0%B8%A3%E0%B8%B2%E0%B8%81%E0%B8%8F" title="โชติมาตรปรากฏ – thai" lang="th" hreflang="th" data-title="โชติมาตรปรากฏ" data-language-autonym="ไทย" data-language-local-name="thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Kadir_(astronomi)" title="Kadir (astronomi) – tyrkisk" lang="tr" hreflang="tr" data-title="Kadir (astronomi)" data-language-autonym="Türkçe" data-language-local-name="tyrkisk" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%92%D0%B8%D0%B4%D0%B8%D0%BC%D0%B0_%D0%B7%D0%BE%D1%80%D1%8F%D0%BD%D0%B0_%D0%B2%D0%B5%D0%BB%D0%B8%D1%87%D0%B8%D0%BD%D0%B0" title="Видима зоряна величина – ukrainsk" lang="uk" hreflang="uk" data-title="Видима зоряна величина" data-language-autonym="Українська" data-language-local-name="ukrainsk" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/C%E1%BA%A5p_sao_bi%E1%BB%83u_ki%E1%BA%BFn" title="Cấp sao biểu kiến – vietnamesisk" lang="vi" hreflang="vi" data-title="Cấp sao biểu kiến" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamesisk" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Magnitude" title="Magnitude – vestflamsk" lang="vls" hreflang="vls" data-title="Magnitude" data-language-autonym="West-Vlams" data-language-local-name="vestflamsk" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Magnitud_aparente" title="Magnitud aparente – waray-waray" lang="war" hreflang="war" data-title="Magnitud aparente" data-language-autonym="Winaray" data-language-local-name="waray-waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E8%A7%86%E6%98%9F%E7%AD%89" title="视星等 – wu" lang="wuu" hreflang="wuu" data-title="视星等" data-language-autonym="吴语" data-language-local-name="wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E8%A6%96%E6%98%9F%E7%AD%89" title="視星等 – kantonesisk" lang="yue" hreflang="yue" data-title="視星等" data-language-autonym="粵語" data-language-local-name="kantonesisk" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%A7%86%E6%98%9F%E7%AD%89" title="视星等 – kinesisk" lang="zh" hreflang="zh" data-title="视星等" data-language-autonym="中文" data-language-local-name="kinesisk" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q124313#sitelinks-wikipedia" title="Rediger lenker til artikkelen på andre språk" class="wbc-editpage">Rediger lenker</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Navnerom"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Tilsynelatende_st%C3%B8rrelsesklasse" title="Vis innholdssiden [c]" accesskey="c"><span>Artikkel</span></a></li><li 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id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="nb" dir="ltr"><p><b>Tilsynelatende størrelsesklasse</b> brukes i <a href="/wiki/Astronomi" title="Astronomi">astronomien</a> og gir et mål for hvor sterkt lyset som når oss fra en gitt stjerne er. Allerede i oldtiden hadde <a href="/wiki/Klaudios_Ptolemaios" title="Klaudios Ptolemaios">Klaudios Ptolemaios</a> klassifisert de synlige stjernene i 6 klasser, slik at de 15 best synlige tilhørte klasse 1, mens de svakeste stjernene, som såvidt kunne skimtes, tilhørte klasse 6. </p><p>I det <a href="/wiki/19._%C3%A5rhundre" title="19. århundre">19. århundret</a> ble det så laget en ny skala, som var basert på fotometrisk måling av lysintensiteter, og som mest mulig skulle avspeile den tradisjonelle skalaen fra 1 til 6. Man fant da ut at, siden øyet reagerte noenlunde logaritmisk på synsinntrykk av forskjellig styrke, en kunne benytte en logaritmisk skala til å definere størelsesklassene som funksjon av observert lysstyrke. Dersom lyset som mottas fra to stjerner har intensitetene <i>I</i><sub>1</sub> og <i>I</i><sub>2</sub>, så definerte man differensen mellom deres tilsynelatende størrelsesklasser, <i>m</i><sub>1</sub> og <i>m</i><sub>2</sub>, ved formelen </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle m_{1}-m_{2}=-2{,}5\cdot \lg \left({I_{1} \over I_{2}}\right),}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>m</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> <mo>−</mo> <msub> <mi>m</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mo>−</mo> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>,</mo> </mrow> <mn>5</mn> <mo>⋅</mo> <mi>lg</mi> <mo>⁡</mo> <mrow> <mo>(</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <msub> <mi>I</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> <msub> <mi>I</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msub> </mfrac> </mrow> <mo>)</mo> </mrow> <mo>,</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle m_{1}-m_{2}=-2{,}5\cdot \lg \left({I_{1} \over I_{2}}\right),}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/56ce6921fae613843d66db7864948639e0d10181" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.505ex; width:27.378ex; height:6.176ex;" alt="{\displaystyle m_{1}-m_{2}=-2{,}5\cdot \lg \left({I_{1} \over I_{2}}\right),}"></span> </p><p>der <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \lg }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>lg</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \lg }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/98b224d76809f72c08c5e833505455ae566ede04" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.809ex; height:2.509ex;" alt="{\displaystyle \lg }"></span> er <a href="/wiki/Logaritme" title="Logaritme">logaritmen</a> med grunntall 10. Faktoren 2,5 ble valgt, fordi man hadde slått fast at lyset fra en meget svak stjerne (klasse 6) hadde en intensitet som var omtrent hundrendeparten av intensiteten av lyset som når oss fra en meget klar stjerne (klasse 1). Setter man nemlig inn i formelen <i>I</i><sub>1</sub>/<i>I</i><sub>2</sub> = 100, så får man at de to stjernene ligger akkurat 5 størrelsesklasser ifra hverandre. Denne definisjonen ble innført av <a href="/w/index.php?title=N._G._Pogson&action=edit&redlink=1" class="new" title="N. G. Pogson (ikke skrevet ennå)">N. G. Pogson</a> i <a href="/wiki/1854" title="1854">1854</a>. </p><p>På fransk heter det «magnitude apparente», på engelsk «apparent magnitude», eller også bare «magnitude», der det da er underforstått at det menes «apparent». På nederlandsk heter det «schijnbare helderheid» og på tysk «scheinbare Helligkeit». </p><p><b><a href="/wiki/Absolutt_st%C3%B8rrelsesklasse" title="Absolutt størrelsesklasse">absolutt størrelsesklasse</a></b> bygger på Pogsons formel, idet man tenker seg stjernen observert fra en standard astronomisk avstand på 10 parsec. Den tenkte, derfra observerte, størrelsesklassen kalles <i>stjernens absolutte størrelsesklasse</i>, symbol <i>M</i>. Idet en stjernes lysintensiteten avtar omvendt proporsjonalt med kvadratet av avstanden, får en da følgende formel for sammenhengen mellom absolutt og tilsynelatende størrelsesklasse: </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \ M=m+5-5\cdot \lg(p),}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mtext> </mtext> <mi>M</mi> <mo>=</mo> <mi>m</mi> <mo>+</mo> <mn>5</mn> <mo>−</mo> <mn>5</mn> <mo>⋅</mo> <mi>lg</mi> <mo>⁡</mo> <mo stretchy="false">(</mo> <mi>p</mi> <mo stretchy="false">)</mo> <mo>,</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \ M=m+5-5\cdot \lg(p),}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/2fde251c51b6525b6e2cb035800af71a970cea37" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:23.281ex; height:2.843ex;" alt="{\displaystyle \ M=m+5-5\cdot \lg(p),}"></span> </p><p>der <i>p</i> er stjernens <a href="/wiki/Parallakse" title="Parallakse">parallakse</a>, som er dens avstand fra solsystemet målt i <a href="/wiki/Parsec" title="Parsec">parsec</a>. </p> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r23230704">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul 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