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[vsnet-obs 24408] New Takamizawa variable (TmzV615)

New Takamizawa variable (TmzV615)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV615).

TmzV615
= GSC3978.1386 212711.59 +581339.6 (2000.0) 14.46 1
= USNO1425.12016117 212711.604 +581339.68 (2000.0) 12.9 18.0
= IRAS21257+5800 212544.7 +580032 (1950.0)
    F12=1.00  F25=0.33  F60=4.36L F100=36.30L
    VAR= 4 LRS=-1
 possibly I: oxygen-rich non-variable star without 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
= 212711.7 +581337 (2000.0) IRAS21257+5800 0.965 0.323 4.387L 35.550L 4%
= 212711.7 +581337 (2000.0) SSC21257+5800 0.965 0.323 4.387L 35.550L
= 212715.0 +581405 (2000.0) CS5315 - - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 14.2-14.9p.

object         YYMMDD(UT)   mag  code
TmzV615        940903.562  <140p  Tmz.VSOLJ
TmzV615        970824.567  149p  Tmz.VSOLJ
TmzV615        970827.540  146p  Tmz.VSOLJ
TmzV615        971218.437  142p  Tmz.VSOLJ
TmzV615        980823.562  145p  Tmz.VSOLJ
TmzV615        980916.530  146p  Tmz.VSOLJ
TmzV615        990709.574  145p  Tmz.VSOLJ
TmzV615        990807.594  143p  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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