DX And rare outburst The long-period SS Cyg-type dwarf nova DX And is rising to one of its rare outbursts. The latest major outburst of DX And was observed in 1996 December. The present early detection, if confirmed, of an outburst of DX And might provide another (the others CH UMa and GK Per) excellent opportunity in probing the accretion disks in dwarf novae having long orbital periods, whose outbursts seem to start from the inner part of accretion disks. GK Per and CH UMa (1996 November) all showed a "plateau" before reaching maximum light, during which the heating wave seems to propagate through the accretion disk inside-out (Kim et al. 1992). Follow-up (multicolor and time-resolved) observations are recommended at this moment of the event. References (GK Per): A. Bianchini et al. 1986, A&A 160, 367 (analysis of light curve) S. -W. Kim et al. 1992, ApJ 384, 269 (dwarf nova-type model) YYMMDD(UT) mag observer 981023.958 147 (G. Poyner) 981024.250 152 (R. J. Modic) 981024.492 <144 (G. Hanson) 981024.671 <134 (H. Maehara) 981024.672 <145 (T. Watanabe) 981024.747 <133 (H. Itoh) 981024.880 <138 (T. Kinnunen) 981025.235 152 (R. J. Modic) 981025.817 <138 (E. Muyllaert) 981025.912 147 (G. Poyner) 981026.781 <138 (E. Muyllaert) 981026.899 <138 (T. Kinnunen) 981027.730 <138 (T. Kinnunen) 981028.444 146: (G. Hanson) 981029.410 146 (G. Hanson) 981030.760 <138 (E. Muyllaert) 981101.608 <129 (T. Watanabe) 981101.816 140: (E. Muyllaert) 981101.839 137 (T. Kinnunen) For more information: http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/dxand.html http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/dxand9612.html Regards, Taichi Kato