AAVSO NEWS FLASH No. 29
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
Tel. 617-354-0484 Fax 617-354-0665
INTERNET: aavso@aavso.org
* * * AAVSO NEWS FLASH * * *
Subject: FN Sgr, CI UMa, AB Dra, No. 29
SX LMi, CY Lyr, X Leo June 6, 1996
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FN SAGITTARII
The symbiotic star FN Sgr continues to fade dramatically (see News Flash
No. 27) from its most recent outburst as indicated by the following
observations:
AAVSO Observer
UT Mag. Initials
MAY 31.162 <13.0 OB
JUN 6.1632 14.5 BRJ
FN Sgr is presently nearly one magnitude fainter than ever before reported
to the AAVSO. The earliest observations of this star in the AAVSO
International Database date from September 1968.
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CI URSAE MAJORIS
The dwarf nova type cataclysmic variable CI UMa is in outburst as indicated
by the following observations:
AAVSO Observer
UT Mag. Initials
JUN 5.2167 <13.5 BTH
JUN 6.1340 14.3 BRJ
JUN 6.2160 13.8 BTH
The most recent outbursts of CI UMa reported to the AAVSO occurred
16 May 1995, 5 August 1995, and 27 September 1995. Coverage in the AAVSO
International Database since September is quite good, but there are a number
of 10-15 day gaps in the observations.
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AB DRACONIS
The dwarf nova type (Z Cam subclass) cataclysmic variable AB Dra is in
outburst as indicated by the following observations:
AAVSO Observer AAVSO Observer
UT Mag. Initials UT Mag. Initials
JUN 5.0021 14.4 BMM JUN 6.142 12.6 SWT
JUN 5.2646 <13.5 BTH JUN 6.1528 12.5 BRJ
JUN 6.0104 12.8 BMM JUN 6.2570 12.8 BTH
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SX LEONIS MINORIS
The dwarf nova type (SU UMa subclass) cataclysmic variable SX LMi appears to
be fading from outburst (see News Flash No. 28) as indicated by the following
observations:
AAVSO Observer AAVSO Observer
UT Mag. Initials UT Mag. Initials
JUN 4.9403 13.0 PYG JUN 6.167 14.0 YRK
JUN 6.073 13.3 SWT JUN 6.2208 13.5 BTH
JUN 6.1000 13.8 SCE
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CY LYRAE
The apparent outburst of the dwarf nova type (SS Cyg subclass) cataclysmic
variable CY Lyr (see News Flash No. 28) has been confirmed as indicated by
the following observations:
AAVSO Observer AAVSO Observer
UT Mag. Initials UT Mag. Initials
JUN 5.967 13.1 DPA JUN 6.1438 13.2 BRJ
JUN 6.0528 12.9 BMM JUN 6.1639 13.5 SCE
JUN 6.111 13.0 SWT JUN 6.2493 13.3 BTH
JUN 6.1271 13.1 MKJ
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X LEONIS
The dwarf nova type (SS Cyg subclass) cataclysmic variable X Leo appears to
be in outburst as indicated by the following observations:
AAVSO Observer
UT Mag. Initials
JUN 4.1660 <13.5 HSG
JUN 5.2340 <12.4 SQN
JUN 6.064 12.4: SWT
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We thank the following contributors for the data that they have provided
for this News Flash:
BMM - M. Biesmans, Belgium OB - D. Overbeek, South Africa
BRJ - J. Bortle, USA PYG - G. Poyner, England
BTH - T. Burrows, USA SCE - C. Scovil, USA
DPA - A. Diepvens, Belgium SQN - L. Shaw, USA
HSG - G. Hanson, USA SWT - R. Stewart, USA
MKJ - J. McKenna, USA YRK - D. York, USA
Please monitor these stars closely and phone-in, fax, or e-mail your
observations to the AAVSO.
Good observing!
Rebecca Pellock, Technical Assistant
in the absence of
Janet A. Mattei, Director
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Symbols may include: < = fainter than magnitude given (variable not seen)
: = uncertain
CCDV = Charge-coupled device with (V) filter
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observations of unusual variable star activity to:
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If you would like data from the AAVSO International Database for
research purposes, please send your request to:
Janet Mattei, AAVSO Director, at aavso@aavso.org
We look forward to including your observations in future editions
of AAVSO NEWS FLASH!
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