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[vsnet-newvar 681] New Takamizawa variable (TmzV784)

New Takamizawa variable (TmzV784)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV784).

TmzV784
= GSC1757.1802 015814.04 +223411.9 (2000.0) 12.50 1
= USNO1125.00646529 015814.051 +223411.73 (2000.0) 11.5 14.4
= 2MASS 015814.080 +223411.72 (2000.0)  5.999  0.000  4.659
= IRAS01554+2219 015526.2 +221936 (1950.0)
     F12=1.20  F25=0.52  F60=0.40L F100=1.00L
     VAR=14 LRS=-1
  possibly II: variable star with 'young' O-rich circumstellar shell
  or VII: variable star with more evolved C-rich circumstellar shell
  or VIa: non-variable star with relatively cold dust at large
       distance, may be carbon-rich
= 015813.3 +223410 (2000.0) IRAS01554+2219 1.227 0.513 0.400L 1.000L 14%
= 015813.3 +223410 (2000.0) SSC01554+2219 1.227 0.513 0.400L 1.000L
= 015814.3 +223415 (2000.0) FSC01554+2219 1.227 0.434 0.127L 0.681L

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 12.4-13.2p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV784        19940301.430  130p  Tmz.VSOLJ
TmzV784        19940803.683  129p  Tmz.VSOLJ
TmzV784        19941102.652  128p  Tmz.VSOLJ
TmzV784        19941206.484  125p  Tmz.VSOLJ
TmzV784        19950127.409  128p  Tmz.VSOLJ
TmzV784        19950823.710  124p  Tmz.VSOLJ
TmzV784        19950921.625  126p  Tmz.VSOLJ
TmzV784        19951020.584  131p  Tmz.VSOLJ
TmzV784        19951217.514  132p  Tmz.VSOLJ
TmzV784        19960110.428  128p  Tmz.VSOLJ
TmzV784        19960815.646  128p  Tmz.VSOLJ
TmzV784        19970606.751  128p  Tmz.VSOLJ
TmzV784        19970706.703  124p  Tmz.VSOLJ
TmzV784        19970830.656  126p  Tmz.VSOLJ
TmzV784        19971203.519  132p  Tmz.VSOLJ
TmzV784        19980629.718  132p  Tmz.VSOLJ
TmzV784        19981112.539  125p  Tmz.VSOLJ
TmzV784        19990709.715  128p  Tmz.VSOLJ
TmzV784        19991128.464  129p  Tmz.VSOLJ
TmzV784        19991227.499  128p  Tmz.VSOLJ
TmzV784        20000902.694  129p  Tmz.VSOLJ

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

Relayed from Kesao Takamizawa <GHA07243@nifty.ne.jp>

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