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[vsnet-newvar 1102] New Takamizawa variable (TmzV800)

New Takamizawa variable (TmzV800)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV800).

TmzV800
= GSC7980.684 213954.18 -375911.8 (2000.0) 11.16 0
= USNO0450.39993312 213954.186 -375911.84 (2000.0) 11.2 99.9
= IRAS21368-3812 213649.5 -381252 (1950.0)
     F12=57.53  F25=33.10  F60=6.92  F100=3.31 
     VAR= 3 LRS=21
     blue, 10micron (silicate) emission, strength=1
     VII: variable star with more evolved C-rich circumstellar shell
= 213953.8 -375918 (2000.0) CD-38.14664 9.3
= 213954.3 -375918 (2000.0) CPD-38.8289 10.3
= 213953.2 -375915 (2000.0) FSC21368-3812 55.420 33.690 7.317 3.281
= 213953.5 -375915 (2000.0) IRAS21368-3812 55.330 33.360 7.030 3.387 3% 3(LRS)
= 213953.5 -375915 (2000.0) SSC21368-3812 55.330 33.360 7.030 3.387
= 213954.2 -375912 (2000.0) 1011 1.06 TYC7980.684.1 plx=-83.1(43.3) (0.04 0.07)
= 213954.1 -375911 (2000.0) 1013 0.97 TYC2-7980.684.1 (10.23 0.03) (11.38 0.06)
= 213958.2 -380053 (2000.0) RAFGL5595

  Takamizawa's comment:

  The star may be an irregular variable  with a range of 9.7-10.3p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV800        19940810.672   97p  Tmz.VSOLJ
TmzV800        19950917.583  101p  Tmz.VSOLJ
TmzV800        19950921.526  103p  Tmz.VSOLJ
TmzV800        19951025.428  102p  Tmz.VSOLJ
TmzV800        19960721.671   99p  Tmz.VSOLJ
TmzV800        19960815.601  102p  Tmz.VSOLJ
TmzV800        19970828.609   98p  Tmz.VSOLJ
TmzV800        20011013.458  102p  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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