Asteroid 9249, Yen, was discovered on September 24, 1960 by C. J. van Houten and Ingrid van Houten-Groeneveld at Palomar Observatory near Pauma Valley, California. It has a period of 3 years, 173 days. It was named after Chen-wan L. Yen, a senior analyst within the Mission and Systems Architecture Section of NASA's Jet Propulsion Laboratory. She has done seminal work in the development and application of optimization techniques to interplanetary trajectories of spacecraft such as Galileo, Magellan, Cassini, and Stardust, which studied, respectively, Jupiter, Venus, Saturn, and Comet Wild 2.
Astrologically, Yen seems to indicate to be yin, or to have a yen for something, that is, a liking.
Dylan Klebold, who seems to have been the "yin" half of the duo that committed the Columbine massacre, had Yen in the seventh house, conjunct Educatio, square Ramirez (invasion by evil), trine 1999 OX3 (to cut off) and Lilith (marginalization, repressed rage erupting), sesquiquadrate Gyptis (to deceive), quincunx Christabel (to let in evil) and Glo (celebrity) and opposite Rousseau (to run a bare-bones operation).
Submissive stay-at-home fundamentalist Christian mom Andrea Yates, who eventually went to prison for drowning her five young children in the bathtub one by one, has Yen square 1992 QB1 (religious expression) and opposite 1999 TD10 (forced association).
Mahatma Gandhi had Yen in the eleventh house of love received and politics, square 1996 TO66 (vision), trine the Moon (the public) and Lacrimosa (to excite sympathy), and opposite Jansky (to seem inspired or eccentric) and Veritas (truth).
Ed Gein, who liked to murder women and wear their body parts, had Yen in the third house of mind and short trips, conjunct Asbolus (awful things) and quincunx the Midheaven.
Fastidious, greedy, and fond of comfort, Hermann Goering had Yen conjunct Saturn, sextile Ixion and Hygeia, and quincunx Vesta.
Dennis Rodman has Yen conjunct Hylonome and Juvenalis (youthful flamboyance or outrageousness), sextile Konstitutsiya (officialdom,i.e.,legal troubles), trine Saturn (work, consequences), opposite Bosque Alegre (throwing off restraint) and Storm.
The glyph for Yen, derived from the Japanese symbol for yen (the Japanese unit of currency, is my own conception.