Reports from G. Poyner, P. Schmeer and AAVSO News Flash No. 119 indicate the eclipsing SU UMa-type dwarf nova HT Cas is undergoing a rare outburst.
1997 Feb. 27.99 <13.4 P. Schmeer 28.0194 <15.0 J. Bortle (AAVSO News flash) 28.865 13.4 G. Poyner 28.94 13.0: P. Schmeer Mar. 01.0174 13.1 J. Bortle (AAVSO News flash) 01.054 13.14V R. Zissell (AAVSO News flash) 01.0611 13.4 J. Bortle
The latest outburst (normal outburst) of HT Cas occurred on 1995 Nov. 17. See http://www.kusastro.kyoto-u.ac.jp/vsnet/DNe/htcas.html for the detail of the 1995 Nov. outburst.
Observations of the outburst and eclipses are strongly recommended. According to H. Baba (private communication), eclipses are expected to occur at:
Min.HJD = 2443727.93721 + 0.073647210338 E
(from vsnet-alert 758, P. Schmeer)
Visual magnitude estimates by P. Schmeer, Bischmisheim, Germany:
HT CASSIOPEIAE (UGSU+E) Feb. 27.99 UT, (13.4 ; 28.94 , 13.0: (uncertain) Sequence: AAVSO Instrument: 203-mm SCT
HT Cas appears to have been at (or near) maximum already 2 hours before John Bortle's observation. The brightness of mag 13 and the fact that is does not seem to rise further indicate a normal outburst (which may of course trigger a superoutburst - or should it be already a faint super- maximum?).
[Very unfortunately my NE limiting magnitude was only mag 4 (and worse) until at least Feb. 28.85 UT (due to thin clouds). Thereafter I missed the first clear spell because I was too tired. During the second one HT Cas was already very low for me (and sky transparency was not as good as the night before).]
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