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[vsnet-obs 20057] New Takamizawa variable (TmzV319)

New Takamizawa variable (TmzV319)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV319).

TmzV319
= USNO0675.04762698 074225.698 -180908.73 (2000.0) 11.3 15.7
= IRAS07401-1801 074011.1 -180158 (1950.0)
    F12=0.69  F25=0.30L F60=0.40L F100=4.78L
    VAR=-1 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or 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
= 074225.0 -180906 (2000.0) IRAS07401-1801 0.683 0.296L 0.400L 4.701L -1%
= 074225.0 -180906 (2000.0) SSC07401-1801 0.683 0.296L 0.400L 4.701L
= 074225.7 -180908 (2000.0) CS1845 14.2 11.2 10.4 -
= 074230.0 -180900 (2000.0) C(Buscombe) V=11.2 B-V=3.0 -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.3-13.3p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV319        940314.505  129p  Tmz.VSOLJ
TmzV319        941111.738  132p  Tmz.VSOLJ
TmzV319        950203.546  130p  Tmz.VSOLJ
TmzV319        950927.799  124p  Tmz.VSOLJ
TmzV319        951118.744  132p  Tmz.VSOLJ
TmzV319        951222.685  128p  Tmz.VSOLJ
TmzV319        960211.515  128p  Tmz.VSOLJ
TmzV319        961021.776  133p  Tmz.VSOLJ
TmzV319        961206.707  130p  Tmz.VSOLJ
TmzV319        970103.622  130p  Tmz.VSOLJ
TmzV319        970227.485  132p  Tmz.VSOLJ
TmzV319        971013.791  127p  Tmz.VSOLJ
TmzV319        971103.802  127p  Tmz.VSOLJ
TmzV319        971204.703  128p  Tmz.VSOLJ
TmzV319        971224.641  128p  Tmz.VSOLJ
TmzV319        980121.556  127p  Tmz.VSOLJ
TmzV319        980217.505  128p  Tmz.VSOLJ
TmzV319        980325.461  125p  Tmz.VSOLJ
TmzV319        981115.744  123p  Tmz.VSOLJ
TmzV319        981212.628  127p  Tmz.VSOLJ
TmzV319        990208.557  125p  Tmz.VSOLJ
TmzV319        990404.438  129p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       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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