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[vsnet-obs 504] NAS.VSS observations for 1995 April
- Date: Tue, 02 May 95 22:15:33 -0400
- To: varstars@lists.funet.fi, vsnet-obs, b.h.granslo@astro.uio.no
- From: b.h.granslo@astro.uio.no id <17161-0@pat.uio.no>; Tue, 2 May 1995 22:15:40 +0200
- Subject: [vsnet-obs 504] NAS.VSS observations for 1995 April
- cc: aavso@cfa0.harvard.edu, Tom.Saville=09544342843445@fax.uio.no
Norwegian Astronomical Society - Variable Star Section
VARIABLE STAR OBSERVATIONS DURING 1995 APRIL - REPORT OF 1995 MAY 2
This report contains visual observations of selected eruptive and cata-
clysmic variables since 1995 April 1. Time system is date with decimals
in Universal Time. All observations are by Bjorn H. Granslo (Fjellhamar,
Norway). Observations from Apr 1 and Apr 30 GMAT were made from Aarnes,
and observations from Apr 15 and 16 were made from Malm. The main in-
strument was a 20.3-cm SCT. A plus sign (+) indicates corrections to
the NAS.VSS report of 1995 April 5.
----------------------------------------------------------------------
Variable Type 1995 UT Magn 1995 UT Magn 1995 UT Magn
----------------------------------------------------------------------
Z And ZAND Apr 3.93 10.9 Apr 7.86 10.8 Apr 17.03 10.8
Apr 30.04 10.8
RX And UGZ +Apr 2.02 <12.5 Apr 7.82 10.8 Apr 30.97 <12.5
EG And ZAND Apr 7.82 7.6 Apr 17.05 7.6 Apr 30.97 7.6
N1995 Aql N Apr 30.038 11.5 Apr 30.990 11.5
Z Cam UGZ +Apr 2.02 11.4 Apr 3.92 10.8 Apr 4.85 10.9
Apr 7.86 11.8 Apr 10.01 12.8 Apr 17.04 <12.5
Apr 29.98 11.2 Apr 30.97 11.6
TX CVn ZAND Apr 3.92 9.9 Apr 16.95 10.0 Apr 30.05 10.0
SY Cnc UGZ +Apr 2.01 12.0 Apr 3.92 12.7 Apr 7.87 13.1:
Apr 30.97 13.0
YZ Cnc UGSU Apr 2.01 <13.6 Apr 7.87 12.6 Apr 30.97 <13.0
UV Cas RCB Apr 3.93 10.7 Apr 7.86 10.7 Apr 17.03 10.8
Apr 30.04 10.8
V705 Cas N +Apr 2.018 12.3 Apr 3.928 12.3 Apr 4.857 12.2
Apr 7.865 12.3 Apr 10.002 12.2 Apr 30.006 12.3
Apr 30.976 12.3
AL Com UG Apr 7.860 12.5 Apr 8.912 12.6 Apr 9.967 12.8
R CrB RCB Apr 10.01 6.0 Apr 16.98 6.0 Apr 29.86 6.2
T CrB NR +Apr 2.02 10.4 Apr 3.92 10.4 Apr 4.85 10.4
Apr 7.87 10.4 Apr 10.01 10.4 Apr 16.95 10.4
Apr 29.98 10.3 Apr 30.98 10.4
SS Cyg UGSS Apr 2.02 10.5 Apr 3.93 11.4 Apr 4.85 11.8
Apr 10.00 12.1 Apr 17.02 12.1 Apr 29.99 12.1
Apr 30.98 12.1
CH Cyg ZAND Apr 4.85 8.5 Apr 7.86 8.2 Apr 10.01 8.5
Apr 15.91 8.2 Apr 29.99 8.7
EM Cyg UGZ +Apr 2.03 13.1 Apr 30.98 12.8
V1057 Cyg INT Apr 10.01 12.6 Apr 29.99 12.8 Apr 30.98 12.9
AG Dra ZAND Apr 3.93 9.6 Apr 7.87 9.6 Apr 16.95 9.6
Apr 30.00 9.6
U Gem UGSS Apr 2.008 12.5 Apr 2.030 12.4 Apr 2.920 9.0
Apr 3.919 9.0 Apr 4.826 9.0 Apr 7.815 9.2
Apr 8.904 9.2 Apr 9.969 9.5 Apr 16.94 <12.3
Apr 30.97 <13.0
AH Her UGZ +Apr 2.03 12.1 Apr 3.93 12.5 Apr 30.98 12.7
X Leo UGSS Apr 2.01 <13.0 Apr 7.82 12.6 Apr 30.97 <13.0
RS Oph NR Apr 31.05 11.8 Apr 30.98 11.8
AX Per ZAND +Apr 2.02 11.7 Apr 10.01 11.7 Apr 30.04 11.7
GK Per NA +Apr 2.02 13.2
V Sge NL Apr 30.00 11.9
RR Tau INAS Apr 4.83 10.5 Apr 7.82 10.8
CQ Tau INAS Apr 4.83 10.2 Apr 7.82 10.2
SU UMa UGSS +Apr 2.02 13.3 Apr 30.97 12.8
WW Vul ISA Apr 30.00 11.3
PU Vul NC Apr 30.00 11.6
----------------------------------------------------------------------
The highlights of 1995 April was a very rare outburst of AL Com, a
notable fading of V1057 Cygni, and the long awaited outburst of U Gem.
In addition, the following dwarf novae were seen in outburst: RX And,
Z Cam (two maxima), SY Cnc, YZ Cnc (normal max.), SS Cyg (fading from a
long maximum in March), EM Cyg (two outbursts), AH Her (at standstill?),
X Leo, and SU UMa (normal max.). WW Vul appeared fainter than usual on
April 30. O. Midtskogen, Tranby, Norway has also reported an outburst
of CH UMa. His observations are: 1995 Apr 28.949 UT, mag. 12.9;
Apr. 29.992, 12.1.
Y. Takenaka, VSOLJ, Japan, has reported that R CrB may have faded
slightly during April and the beginning of May, and the observations by
undersigned also indicate that R CrB may have faded during April.
Further observing will be attempted as soon as possible.
Nova Aql 1995 has apparently not reached its expected fade due to dust
condensation by the end of April (ref. IAUC 6154, AAVSO Circ. 205).
The magnitudes were deduced from Pogson step estimates by using
B. Skiff's photoelectric V, b-y sequence.
Yours sincerely,
Bjorn H. Granslo
Director, NAS.VSS