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* * * AAVSO NEWS FLASH * * *
Subject: CY UMa, UV Per, SS Aur No. 6
X Leo, omi Cet,
R CrB stars (S Aps, R CrB, SU Tau) March 22, 1996
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CY URSAE MAJORIS
The dwarf nova type (SU UMa subclass) cataclysmic variable CY UMa is
in outburst (possibly superoutburst) as indicated by the following
observations:
UT JD Mag. Observer
MAR 17.107 2450159.607 17.6 CCDV (R. Zissell, USA)
MAR 19.146 2450161.646 17.2 CCDV (Zissell)
MAR 20.2451 2450162.7451 <14.4 (T. Burrows, USA)
MAR 21.2493 2450163.7493 <14.4 (Burrows)
MAR 21.871 2450164.371 13.0 (J. Pietz, Germany - vsnet)
MAR 21.999 2450164.499 13.0 (T. Vanmunster, Belgium - vsnet)
MAR 22.2188 2450164.7188 12.8 (Burrows)
CY UMa had normal outbursts in May 1995 and July 1995 and superoutbursts
in March 1995 and March 1994.
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UV PERSEI
UV Per, after having a normal outburst (see AAVSO News Flash No. 4 and
No. 5), has gone into a superoutburst as indicated by the following
observations:
UT JD Mag. Observer
MAR 19.1750 2450161.675 12.3 (G. Hanson, USA)
MAR 19.786 2450162.286 11.6 (L. T. Jensen, Denmark)
MAR 19.8 2450162.3 12.7 (J. Gunther, France)
MAR 20.1500 2450162.65 11.9 (Hanson)
MAR 20.80 2450163.3 12.5 (M. Verdenet, France)
MAR 21.0868 2450163.5868 12.0 (A. Dill, USA)
MAR 21.1521 2450163.6521 12.3 (T. Burrows, USA))
MAR 22.02 2450164.52 12.5 (G. Dyck, USA)
MAR 22.1521 2450164.6521 12.3 (Burrows)
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SS AURIGAE
The dwarf nova type (U Gem subclass) cataclysmic variable SS Aur is in
outburst as indicated by the following observations. The rise to this
outburst has been exceptionally slow (somewhat similar to the anomalous
outbursts of SS Cyg which take several days to reach maximum).
UT JD Mag. Observer
FEB 15.2153 2450128.7153 <13.9 (W. Dillon, USA)
FEB 19.1521 2450132.6521 <13.9 (J. McKenna, USA)
MAR 2.2528 2450144.7528 <13.2 (Dillon)
MAR 18.1708 2450160.6708 14.7: (T. Burrows, USA)
MAR 19.0167 2450161.5167 14.3 (G. Chaple, USA)
MAR 19.2076 2450161.7076 13.3 (G. Hanson, USA)
MAR 19.2493 2450161.7493 13.7 (Burrows)
MAR 19.783 2450162.283 12.5 (L. T. Jensen, Denmark)
MAR 19.8 2450162.3 12.1 (J. Gunther, France)
MAR 20.1618 2450162.6618 12.3 (Hanson)
MAR 20.80 2450163.3 11.2 (M. Verdenet, France)
MAR 21.001 2450163.501 11.6 (S. Brincat, Malta)
MAR 21.0993 2450163.5993 11.8 (A. Dill, USA)
MAR 21.1840 2450163.684 11.3 (Burrows)
MAR 22.0778 2450164.5778 11.2 (R. Hays, USA)
MAR 22.1688 2450164.6688 11.0 (Burrows)
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X LEONIS
The dwarf nova type (U Gem subclass) cataclysmic variable X Leo is in
outburst as indicated by the following observations:
UT JD Mag. Observer
MAR 22.2104 2450164.7104 12.7 (T. Burrows, USA)
MAR 22.551 2450165.051 12.1 (M. Nakatani, Japan - vsnet)
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OMICRON CETI
The long period variable and prototype of its kind omi Cet (Mira) is
at or near maximum as indicated by the following observation:
UT JD Mag. Observer
MAR 20.4 2450162.9 3.6 (T. Cragg, Australia)
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R CORONAE BOREALIS STARS
The following R CrB stars are going through declines as indicated by the
following observations:
Name UT JD Mag. Observer
S APODIS MAR 20.6 2450163.1 11.8 (T. Cragg, Australia)
*approximately 2 magnitudes fainter than maximum*
R CORONAE MAR 2.0410 2450144.541 13.3 (M. Biesmans, Belgium)
BOREALIS MAR 13.1604 2450155.6604 13.3 (C. Stephan, USA)
MAR 14.2882 2450156.7882 13.1 (P. Dombrowski, USA)
MAR 19.921 2450162.421 13.3 (L. T. Jensen, Denmark)
MAR 20.1472 2450162.6472 13.0 (M. Kohl, Switzerland)
MAR 20.7 2450163.2 13.3 (Cragg)
*approximately 7 magnitudes fainter than maximum*
SU TAURI MAR 10.4 2450152.9 17.1 (Cragg)
MAR 17.0917 2450159.5917 <15.9 (J. Bortle, USA)
*approximately 7.3 magnitudes fainter than maximum*
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Please monitor these stars closely and phone-in, fax, or e-mail your
observations to the AAVSO.
Good observing!
Janet A. Mattei
________________________________________________________________________________
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