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[vsnet-obs 23401] New Takamizawa variable (TmzV551)

New Takamizawa variable (TmzV551)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV551).

TmzV551
= GSC4462.2539 214549.75 +681524.1 (2000.0) 10.75 1
= USNO1575.04848503 214549.762 +681524.29 (2000.0) 10.1 14.0
= IRAS21448+6801 214448.6 +680130 (1950.0)
    F12=0.63  F25=0.25L F60=0.40L F100=12.02L
    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
= 214549.2 +681519 (2000.0) FSC21447+6801 0.584 0.141 0.600L 6.124L
= 214549.9 +681523 (2000.0) IRAS21448+6801 0.640 0.250L 0.400L 12.360L -1%
= 214549.9 +681523 (2000.0) SSC21448+6801 0.640 0.250L 0.400L 12.360L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 10.3-11.1p.

object         YYMMDD(UT)   mag  code
TmzV551        970827.540  109p  Tmz.VSOLJ
TmzV551        971218.437  109p  Tmz.VSOLJ
TmzV551        980823.563  107p  Tmz.VSOLJ
TmzV551        980916.530  105p  Tmz.VSOLJ
TmzV551        981107.440  103p  Tmz.VSOLJ
TmzV551        990709.574  111p  Tmz.VSOLJ
TmzV551        990807.594  108p  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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