| Show | code | author ⇓ |
| Show | ZWI | Zwiers, H.F. |
| Show | ZWA | Zwahlen, N., North, P., Debernardi, Y., Eyer, L., Galland, F., Groenewegen, M.A., |
| Show | ZUR | Zurlo, A., Vigan, A., Hagelberg, J., Desidera, S., Chauvin, G., Almenara, J.M., |
| Show | ZUL | Zulevic, D.J. |
| Show | ZUC | Zuckerman, B. & Becklin, E.E. |
| Show | ZIV | Zivkov, V. & Pavlovic, R. |
| Show | ZIR | Zirm, H. |
| Show | ZIN | Zinner, E. |
| Show | ZNN | Zinnecker, H., Chelli, A., Carrasco, L., Cruz-Gonzales, I., & Perrier, C. |
| Show | ZIM | Zimmermann , L. |
| Show | ZMM | Zimmerman, N., Oppenheimer, B.R., Hinkley, S., Brenner, D., Parry, I.R., |
| Show | ZHU | Zhuchkov, R.Y., Malogolovets, E.V., Balega, Yu.Yu., Bikmaev, I.F., Kuznetsov, M., |
| Show | ZHA | Zhao, M., Monnier, J.D., Torres, G., Boden, A.F., Claret, A., Millan-Gabet, R., |
| Show | ZHN | Zhang, Z.H., Pinfield, D.J., Day-Jones, A.C., Burningham, B., Jones, H.R.A., |
| Show | ZNG | Zeng, Y., Brandt, T.D., Li, G., Dupuy, T.J., Li, Y., Brandt, G.M., Farihi, J., |
| Show | ZEL | Zeller, G. |
| Show | ZAV | Zavala, R.T., Adelman, S.J., Hummel, C.A., Gulliver, A.F., Caliskan, H., |
| Show | ZAS | Zasche, P., Wolf, M., Hartkopf, W.I., Svoboda, P., Uhlar, R., Liakos, A., & |
| Show | ZRR | Zarrilli, S., Kraus, S., Kreplin, A., Monnier, J.D., Gardner, T., Merand, A., |
| Show | ZRT | Zaritsky, D., Harris, J., Thompson, I.B., Grebel, E.K. & Massey, P. |
| Show | OSO | Zapatero Osorio, M.R. & Martin, E.L. |
| Show | ZAG | Zagar, F. |
| Show | ZAE | Zaera, J.A. |
| Show | YUN | Yun, J. & Clemens, D. |
| Show | YOU | Young, S.P. |
| Show | YRK | Young, R.K. |
| Show | YPR | Young, P.R., & Dupree, A.K. |
| Show | YON | Young, J.M. |
| Show | YLW | Young, E., Lada, C., & Wilking, B. |
| Show | YNG | Young, C.A. & McNeill, M. |
| Show | YAS | Young, A.S. & Farnsworth, A.H. |
| Show | WAN | Yiming, W., Yaohui, Q., Puzhang, Q., Ruining, L., & Pin, Q. |
| Show | YYG | Yang, Y., Akiyma, E., Currie, T., Dong, R., Hashimoto, J., Hayashi, S.S., Grady, |
| Show | YAN | Yan L.-S. (Chu Z.-Y., Ma, Z.-L., & Yan, L.-S.) |
| Show | YAM | Yamamoto, K., Matsuo, T., Shibai, H., Itoh, Y., Konishi, M., Sudo, J., Tanii, R., |
| Show | YSC | Yale-Southern Connecticut (from additional DD list - see HOR) |
| Show | YSJ | Yale-San Juan (from additional DD list - see HOR) |
| Show | YR | Yale-Rochester (from additional DD list - see HOR) |
| Show | Y | Yale Catalog |
| Show | YDV | Yadav, R.K.S. & Sagar, R. |
| Show | WYN | Wynn-Williams, C.G., Becklin, E.E., & Neugebauer, G. |
| Show | WYE | Wyller, A.A. |
| Show | WYL | Wylie, L.R. |
| Show | WUL | Wullaert, P., Coliac, J.-F., Debackere, A., Durand, P. & Vasseur, S. |
| Show | WUY | Wu, Y.-L., Close, L.M., Males, J.R., Follette, K., Morzinski, K., Kopon, D., |
| Show | WRU | Wrublewsky |
| Show | WG | Wrigley, R.W. |
| Show | WRI | Wright, K.O. & Pugh, R.E. |
| Show | WTE | Wright, E.L., Skrutskie, M.F., Kirkpatrick, J.D., Gelino, C.R., Griffith, R.L., |
| Show | WRT | Wright, D.C. |