Thetidian
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17 Thetis — Infobox Planet | discovery=yes | physical characteristics = yes | bgcolour=#FFFFC0 name=17 Thetis discoverer=R. Luther discovered=April 17, 1852 alt names=A913 CA; A916 YF; mp|1954 SO|1 mp category=Main belt epoch=October 22, 2004 (JD 2453300.5)… … Wikipedia