Symbol for the asteroid <a href="https://en.wikipedia.org/wiki/35_Leukothea" class="extiw" title="en:35 Leukothea">en:35 Leukothea</a>
G. Rumker and C.A.F. Peters
1855
Rumker, G. &amp; Peters, C.A.F. 1855, Astronomische Nachrichten, 40, 373 (via <a rel="nofollow" class="external autonumber" href="http://aa.usno.navy.mil/hilton/AsteroidHistory/minorplanets.html">[1]</a>)