Outburst of TmzV34 = RXJ0915.8+0900 T. Watanabe (Shizuoka, Japan) reports the detection of the (first-ever visually observed) outburst of TmzV34 = RXJ0915.8+0900. The object was first detected by ROSAT, whose optical identification as an cataclysmic variable was given in "The Hamburg/RASS Catalogue of Optical Identifications" (see also vsnet 1361 http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet/msg01361.html ). The variability of this star was independently discovered (TmzV34) by K. Takamizawa (Nagano, Japan), who, although initially suggested the irregular (L) type variability, detected the 1994 Nov. 30 outburst (at mag 13.1, vsnet-obs 10504, http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/obs10000/msg00504.html ). YYMMDD(UT) mag observer 990407.616 <134 (T. Watanabe) 990408.596 136 (T. Watanabe) Further observations of the present, and future outbursts of this object is strongly encouraged. Regards, Taichi Kato