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3C 273
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== External links == * [http://isdc.unige.ch/3c273/ 3C 273's Database at the INTEGRAL Science Data Centre (ESA)] * [http://www.perseus.gr/Astro-DSO-QSO-3C273.htm Detailed CCD image of 3C 273 based on 30 min total exposure] * [http://astro.neutral.org/imagehtml/20050408_3c273.html Amateur 3C 273 Redshift Measurement] * [http://www.nightskyinfo.com/archive/3c273_quasar NightSkyInfo.com β 3C 273] * [http://www.sky-map.org/?object=3C%20273&zoom=12&img_source=SDSS SKY-MAP.ORG SDSS image of 3C 273] * [https://web.archive.org/web/20090123191313/http://www.aavso.org/vstar/vsots/spring05.shtml The Quasar 3C 273: Spring 2005 β Variable Star Of The Season AAVSO] * {{WikiSky|z=12}} {{Sky|12|29|06.7|+|02|03|09|2440000000}} {{Virgo}} {{Portal bar|Astronomy|Stars|Outer space}} {{DEFAULTSORT:3C 273}} [[Category:Virgo (constellation)]] [[Category:OVV quasars]] [[Category:3C objects|273]]
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