| | |caption=High-resolution color image of Ariel, taken by [[Voyager 2]] | | |caption=High-resolution color image of Ariel, taken by [[Voyager 2]] |
| | |date=October 24, 1851<ref name=usgs>"[http://planetarynames.wr.usgs.gov/append7.html Gazetteer of Planetary Nomenclature: Planetary Body Names and Discoverers]." US Geological Survey, Jennifer Blue, ed. March 31, 2008. Accessed April 17, 2008.</ref><ref name=Lassell1>Lassell, W. "[http://adsabs.harvard.edu//full/seri/AJ.../0002//0000070.000.html Letter to the Editor re Discovery of Two Satellites of Uranus]." ''Astron. J.'' 2:70, 1851. Accessed June 13, 2008.</ref><ref name=Lassell2>Lassell, William. "[http://adsabs.harvard.edu//full/seri/AN.../0033//0000136.000.html Entdeckung von 2 neuen Uranus Trabanten]." ''Astronomische Nachrichten'', 33:259-260, 1852. Accessed June 13, 2008</ref> | | |date=October 24, 1851<ref name=usgs>"[http://planetarynames.wr.usgs.gov/append7.html Gazetteer of Planetary Nomenclature: Planetary Body Names and Discoverers]." US Geological Survey, Jennifer Blue, ed. March 31, 2008. Accessed April 17, 2008.</ref><ref name=Lassell1>Lassell, W. "[http://adsabs.harvard.edu//full/seri/AJ.../0002//0000070.000.html Letter to the Editor re Discovery of Two Satellites of Uranus]." ''Astron. J.'' 2:70, 1851. Accessed June 13, 2008.</ref><ref name=Lassell2>Lassell, William. "[http://adsabs.harvard.edu//full/seri/AN.../0033//0000136.000.html Entdeckung von 2 neuen Uranus Trabanten]." ''Astronomische Nachrichten'', 33:259-260, 1852. Accessed June 13, 2008</ref> |