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[vsnet-obs 1577] NAS.VSS observations of R CrB, SN 1995a1, HT Cas, T Leo
- Date: Wed, 22 Nov 95 00:13:26 +0100
- To: vsnet-obs@kusastro.kyoto-u.ac.jp, varstars@lists.funet.fi
- From: b.h.granslo@astro.uio.no
- Subject: [vsnet-obs 1577] NAS.VSS observations of R CrB, SN 1995a1, HT Cas, T Leo
- cc: aavso@observations.org, guy@tahq.demon.co.uk
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
Norwegian Astronomical Society - Variable Star Section
***** VARIABLE STAR OBSERVATIONS - REPORT OF 1995 NOVEMBER 21 *****
This report contains recent observations of a few interesting variables
(R CrB, SN 1995al, HT Cas, T Leo). Observations of Nova Cas 1995 are
reported separately.
1. R CORONAE BOREALIS
This carbon star underwent a major fade and is currently in a deep minimum
as indicated by the following visual magnitude estimates:
YYYY MM DD.DDD LIGHT ESTIMATES MAG CL INSTRUM. OBSERVER
1995 09 30.82 A-5;E+4 6.1 1 B10x50 #Granslo, B. H.
1995 10 07.81 E-1;F+1;G+7 6.6 1 B10x50 Granslo, B. H.
1995 10 10.831 G-3;J+4 7.6 1 L76;40x #Granslo, B. H.
1995 10 12.886 G-8;J-2;K+2;L+3 8.1 2 L76;40x Granslo, B. H.
1995 10 18.765 R-5;S-1;T+4 10.8 1 L76;61x #Granslo, B. H.
1995 10 19.812 S-6;T=V;U+5 11.2 1 C203;77x *Granslo, B. H.
1995 10 19.854 S-4;T+3 10.9 2 C203;77x *Skjaeraasen, O.
1995 10 20.728 T-4;U+2;W+5 11.6 1 C203;123x *Granslo, B. H.
1995 10 21.733 T-8;U-1;W+3 11.9 2 C203;118x *Granslo, B. H.
1995 10 25.753 T-7;U-1;W+3 11.9 2 C203;123x *Granslo, B. H.
1995 11 02.197 U-2;W+2 12.0 2 C203;123x *Granslo, B. H.
1995 11 04.195 U-3;W+1 12.1 2 C203;123x *Granslo, B. H.
1995 11 04.717 U-3;W+1 12.1 2 C203;123x *Granslo, B. H.
1995 11 11.733 X-4;Y-2 13.2 2 C203;123x *Granslo, B. H.
1995 11 16.218 X-5;Y-3 13.3: 3 C203;123x *Granslo, B. H.
1995 11 20.199 X-6;Y-4;Z+1 13.4 2 C203;222x *Granslo, B. H.
1995 11 21.228 X-6;Y-4;Z+1 13.4 2 C203;222x *Granslo, B. H.
Comparison stars (BAA): A=5.56; E=6.57; F=6.72; G=7.18; J=7.93; K=8.28;
L=8.60; R=10.29; S=10.66; T=11.10; U=11.79; W=12.20; X=12.63; Y=13.07;
Z=13.53.
2. SUPERNOVA 1995al IN NGC 3021
This type Ia supernova was discovered by S. Pesci and S. Mazza on Nov 1,
1995. Visual observations have been made by members of our group:
YYYY MM DD.DDD LIGHT ESTIMATES MAG CL INSTRUM. OBSERVER
1995 11 03.193 C-7;D+2 12.8 2 C203;222x *Granslo, B. H.
1995 11 04.202 C-7;D+3 12.7 2 C203;222x *Granslo, B. H.
1995 11 16.230 C-8;D+2 12.8 2 C203;222x *Granslo, B. H.
1995 11 18.073 D-2;E+3 13.2 1 M254;238x *Granslo, B. H.
1995 11 18.073 D-2;E+3 13.2 2 M254;238x *Skartlien, R.
1995 11 20.192 D-2;E+3 13.2 2 C203;222x *Granslo, B. H.
1995 11 21.231 D-2;E+3 13.2 2 C203;222x *Granslo, B. H.
Comparison stars (TA, GSC): C=12.0; D=13.0; E=13.5.
3. HT CASSIOPEIAE
On Nov 17.9 UT, 1995 a very rare outburst of this dwarf nova was discovered
by W. Worraker. Due to short duration we were make any positive, and only
the following negative observation is available. We were clouded out on
November 18/19.
YYYY MM DD.DDD LIGHT ESTIMATE MAG CL INSTRUM. OBSERVER
1995 11 19.729 134+4>V (seq. AAVSO) <13.8 2 C203;222x *Granslo, B. H.
3. T LEONIS
P. Schmeer reported an outburst of this dwarf nova on 1995 Nov 13, and
the following visual observations by undersigned confirm that T Leo was
bright on Nov 14 and Nov 16 UT.
YYYY MM DD.DDD LIGHT ESTIMATES MAG CL INSTRUM. OBSERVER
1995 11 14.215 c-4;d+1;e+1;f+8 ~11 2 C203;123x *Granslo, B. H.
1995 11 16.208 c-4;d-1;e=v;f+6 ~11 1 C203;123x *Granslo, B. H.
1995 11 20.19 h-3>v <~13 2 C203;123x *Granslo, B. H.
1995 11 21.22 h-3>V;k>v <~13 2 C203;123x *Granslo, B. H.
Magnitudes are approximate as no sequence was available.
Observers: Bjorn H. Granslo (Fjellhamar, Norway); Roar Skartlien (Oslo,
Norway); Olaf Skjaeraasen (Oslo, Norway).
Bjorn H. Granslo
(bgranslo@astro.uio.no)
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