First-ever-observed!? superoutburst of V2051 Oph
First-ever-observed!? superoutburst of V2051 Oph
(CCD light curve kindly provided by L. T. Jensen. Clear eclipse superimposed
on a superhump is seen).
Possible superoutburst of V2051 Oph
The eclipsing, suspected SU UMa-type dwarf nova has brightened considerably, indicating the star undergoing the first-ever-observed superoutburst since the discovery. According to Wenzel (IBVS), an examination of ~400 Sonneberg plates could not reveal brightenings (typical limiting magnitude 11.5-13).
High-speed photometry to reveal superhumps and eclipse features is most urgently requested.
Observations (including eclipse observations):
YYMMDD(UT) mag observer 980517.000 <138 (D. Overbeek) 980517.473 135 (R. Stubbings) 980517.481 136 (R. Stubbings) 980517.488 136 (R. Stubbings) 980517.999 134 (D. Overbeek) 980518.427 119 (R. Stubbings) 980518.500 117 (P. Nelson) 980518.501 117 (P. Nelson) 980518.501 119 (R. Stubbings) 980518.501 119 (P. Nelson) 980518.501 119 (R. Stubbings) 980518.502 119 (P. Nelson) 980518.502 119 (R. Stubbings) 980518.503 119 (P. Nelson) 980518.503 120 (R. Stubbings) 980518.503 120 (R. Stubbings) 980518.503 122 (P. Nelson) 980518.504 125 (R. Stubbings) 980518.504 126 (P. Nelson) 980518.505 128 (P. Nelson) 980518.505 128 (R. Stubbings) 980518.506 126 (P. Nelson) 980518.506 130 (R. Stubbings) 980518.506 123 (P. Nelson) 980518.506 128 (R. Stubbings) 980518.507 120 (P. Nelson) 980518.507 125 (R. Stubbings) 980518.508 119 (P. Nelson) 980518.508 120 (R. Stubbings) 980518.508 119 (P. Nelson) 980518.508 120 (R. Stubbings) 980518.509 117 (P. Nelson) 980518.509 120 (R. Stubbings) 980518.510 119 (P. Nelson) 980518.510 119 (R. Stubbings) 980518.510 119 (P. Nelson)Regards,
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