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[vsnet-obs 2633] VS Obs Apr 17/18 (CR Boo)
- Date: Thu, 18 Apr 1996 18:34:52 +0100 (BST)
- To: VS Obs -- Jost Jahn <j.jahn@abbs.heide.de>, xun4@bham.ac.uk, VSNET-OBS <vsnet-obs@kusastro.kyoto-u.ac.jp>
- From: Gary Poyner <gp@star.sr.bham.ac.uk>
- Subject: [vsnet-obs 2633] VS Obs Apr 17/18 (CR Boo)
- Original-To: VS Obs -- Jost Jahn <j.jahn@abbs.heide.de>, Varstars BBS <varstars@fi.funet.lists>@xun4, VSNET-OBS <vsnet-obs@kusastro.kyoto-u.ac.jp>
- PP-Warning: Parse error in original version of preceding To line
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
Variable Star Observations for April 17th/18th 1996
Gary Poyner
Birmingham
England
E-mail gp@star.sr.bham.ac.uk
TA/BAA Recurrent Objects Programme:
http://vsnet.demon.co.uk/astronomer
40cm, 22cm reflectors & 10x5oB
Cloud eventually!
Star UT Mag
---------------------------------------
3C 273 Apr 17.917 12.7
3C 279 17.918 <15.0
3C 371 18.017 15.5
Aql V1413 18.071 11.1
Aur FS 17.880 <14.6
Aur SS 17.879 14.8
Boo CR 18.001 13.9 Outburst? See below
Boo TT 17.922 <14.8
Boo UZ 17.921 <14.4
Cam AF 17.884 <15.1
Cam BY 17.881 14.7
Cam Z 17.910 12.5
Cas DK 17.871 <13.1
Cas GX 17.870 <12.4
Cas HT 17.869 <12.7
Cas N95 17.866 9.0
Cas UV 17.868 10.7
Cas V452 17.874 <13.4
Cas V630 17.872 <12.7
CMi AQ 17.892 <14.2
Cnc AK 17.897 <15.3
Cnc AT 17.894 13.2 Outburst
Cnc DE 17.895 <14.7
Cnc EG 17.896 <15.2
Cnc SY 17.893 11.9
Cnc YZ 17.892 13.4
Com AL 17.903 <15.5
Com GO 17.904 <14.9
Com W 17.905 14.6
CrB R 17.923 12.5
CrB T 17.924 10.1
CrB V 18.002 8.7
CrB W 18.002 9.8
CVn TX 17.889 10.1
Cyg BF 18.081 11.6
Cyg CH 18.040 9.3
Cyg Chi 18.065 11.2
Cyg CI 18.063 11.0
Cyg EY 18.065 14.8
Cyg Scovil 18.060 <14.8
Cyg SS 18.085 12.5
Cyg V1016 18.074 10.8
Cyg V1028 18.058 <15.0
Cyg V1113 18.056 <15.0
Cyg V1316 18.076 <15.3
Cyg V1329 18.072 13.6
Cyg V1330 18.073 <14.7
Cyg V1363 18.062 <14.9
Cyg V1454 18.063 <13.9
Cyg V1974 18.039 15.1:
Cyg V337 18.078 <13.7
Cyg V404 18.060 <14.8
Cyg V482 18.061 10.9
Cyg V542 18.057 <15.4
Cyg V795 18.079 <14.4
Dra AB 17.885 13.0 Outburst
Dra AG 17.885 9.5
Dra DO 17.912 14.9
Dra DV 18.015 <15.5
GD552 17.887 <12.1
Gem AW 17.878 <15.2
Gem CI 17.874 <14.5
Gem IR 17.876 <14.5
Gem SY 17.877 <14.1
Gem U 17.878 14.4
Her AH 18.007 12.0 Outburst
Her AM 18.013 13.7
Her DQ 18.015 14.3
Her HZ 18.008 13.0
Her V443 18.009 12.1
Her V589 18.010 <15.1
Her V592 18.012 <15.3
Her YY 18.008 13.1
HS1804+6753 18.019 15.8: In eclipse?
Leo RZ 17.898 <15.0
Leo T 17.899 <15.3
Leo X 17.897 12.3 Outburst
LMi RU 17.900 <15.1
LMi RZ 17.899 <14.1
LMi SS 17.902 <14.8
LMi ST 17.901 <15.1
LMi SX 17.901 <14.4
Lyr AY 18.021 14.7 fading
Lyr DM 18.022 <14.8
Lyr HR 18.022 <15.0
Lyr MV 18.028 15.8
Lyr V344 18.024 15.1 fading
Lyr V358 18.031 <13.9
Lyr V419 18.023 <14.4
Lyr V493 18.030 <15.1
Mark 421 17.890 13.2
Mon V651 17.892 11.0
NGC 4151 17.888 11.6
NSV 786 17.888 <14.2
OJ 287 17.894 14.3
Per DY 17.883 11.6
Per GK 17.865 12.0
Per TZ 17.883 <13.2
Per UV 17.881 <12.8
Per UW 17.882 <12.6
PG1510+234 18.005 15.4
PG1633+115 18.006 <14.6
S10932 17.906 <14.9
Ser LX 18.003 15.4
Ser R 18.003 7.3
Sge SV 18.069 10.6
TAV0033+59 17.869 10.7
UMa BC 17.890 <15.3
UMa BZ 17.908 <15.4
UMa CH 17.910 14.9
UMa CY 17.891 <14.8
UMa DI 17.908 15.3 Outburst
UMa DV 17.914 <15.2
UMa ER 17.867 13.1
UMa SU 17.909 13.9
UMa SW 17.867 10.5
UMa SW 18.001 10.7
UMa SW 18.056 10.5
UMi SS 18.019 <15.0
UMi Z 17.886 14.1
Vir HV 17.919 <14.9
CR Boo:
I have observed many "outbursts" in this star over the years, but I
am unable to find an accurate classification of it's type. The TA
chart I use has it noted as type AM? (which is clearly in error).
In MVS June 1994, W. Wenzel has produced a short paper on CR Boo,
stating that it is a member of a helium white dwarf binary system,
which mimics a dwarf nova with frequent outbursts. Can anyone shed
more light on this interesting star?
End