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[vsnet-obs 24435] New Takamizawa variable (TmzV619)

New Takamizawa variable (TmzV619)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV619).

TmzV619
= GSC3971.1067 213610.40 +554111.1 (2000.0) 12.18 1
= USNO1425.12198900 213610.403 +554111.21 (2000.0) 11.5 15.4
= IRAS21345+5527 213434.2 +552743 (1950.0)
    F12=0.69  F25=0.28L F60=0.58L F100=6.31L
    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
= 213610.3 +554112 (2000.0) IRAS21345+5527 0.667 0.279L 0.575L 6.185L -1%
= 213610.3 +554112 (2000.0) SSC21345+5527 0.667 0.279L 0.575L 6.185L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.8-12.4p.

object         YYMMDD(UT)   mag  code
TmzV619        940903.562  121p  Tmz.VSOLJ
TmzV619        970824.567  124p  Tmz.VSOLJ
TmzV619        970827.540  121p  Tmz.VSOLJ
TmzV619        971218.437  119p  Tmz.VSOLJ
TmzV619        980823.562  118p  Tmz.VSOLJ
TmzV619        980916.530  119p  Tmz.VSOLJ
TmzV619        990709.574  123p  Tmz.VSOLJ
TmzV619        990807.594  120p  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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