[vsnet-newvar 1100] New Takamizawa variable (TmzV798)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV798)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV798).

TmzV798
= GSC5847.51 003221.56 -183908.8 (2000.0) 12.94 0
= GSC5847.51 003221.60 -183908.6 (2000.0) 12.56 0
= USNO0675.00109478 003221.566 -183909.03 (2000.0) 10.1 13.2
= IRAS00298-1855 002951.9 -185537 (1950.0)
     F12=2.75  F25=1.32  F60=0.40L F100=1.00L
     VAR=43 LRS=-1
  possibly II: variable star with 'young' O-rich circumstellar shell
  or VII: variable star with more evolved C-rich circumstellar shell
= 003220.3 -183914 (2000.0) FSC00298-1855 2.645 1.090 0.230L 0.324L
= 003221.5 -183907 (2000.0) LMS3 M6 13.0
= 003222.5 -183904 (2000.0) IRAS00298-1855 2.764 1.296 0.400L 1.000L 43%
= 003222.5 -183904 (2000.0) SSC00298-1855 2.764 1.296 0.400L 1.000L
= 003217.9 -183759 (2000.0) M6III(Buscombe) V=10.34 B-V=1.49 U-B=1.16

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.0-13.0p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV798        19940812.728  122p  Tmz.VSOLJ
TmzV798        19951118.420  130p  Tmz.VSOLJ
TmzV798        19961202.438  121p  Tmz.VSOLJ
TmzV798        19970828.678  126p  Tmz.VSOLJ
TmzV798        19971101.573  122p  Tmz.VSOLJ
TmzV798        20001123.481  124p  Tmz.VSOLJ
TmzV798        20011013.553  120p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras and 25cm F2.8
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <k-takamizawa@nifty.ne.jp>

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