Z Cha superoutburst The reported outburst of the eclipsing SU UMa-type dwarf nova Z Cha seems to have evolved into a superoutburst. Eclipse observations by Rod Stubbings are also included below. YYMMDD(UT) mag observer 990109.477 150 (R. Stubbings) 990113.849 <140 (B. Monard) 990114.531 <145 (P. Nelson) 990115.830 <140 (B. Monard) 990116.498 153 (R. Stubbings) 990116.583 152 (P. Nelson) 990117.507 <150 (R. Stubbings) 990117.530 152 (P. Nelson) 990123.567 150 (R. Stubbings) 990130.469 <134 (R. Stubbings) 990131.467 124 (R. Stubbings) 990131.496 123 (R. Stubbings) 990201.498 117 (R. Stubbings) 990201.503 116 (R. Stubbings) 990201.504 117 (R. Stubbings) 990201.505 117 (R. Stubbings) 990201.506 117 (R. Stubbings) 990201.506 118 (R. Stubbings) 990201.507 117 (R. Stubbings) 990201.508 117 (R. Stubbings) 990201.508 117 (R. Stubbings) 990201.509 118 (R. Stubbings) 990201.510 120 (R. Stubbings) 990201.510 122 (R. Stubbings) 990201.511 125 (R. Stubbings) 990201.512 126 (R. Stubbings) 990201.512 127 (R. Stubbings) 990201.513 125 (R. Stubbings) 990201.514 122 (R. Stubbings) 990201.515 123 (R. Stubbings) 990201.515 121 (R. Stubbings) 990201.516 120 (R. Stubbings) 990201.517 118 (R. Stubbings) 990201.517 118 (R. Stubbings) 990201.518 117 (R. Stubbings) 990201.522 123 (P. Nelson) 990201.541 117 (R. Stubbings)