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[vsnet-obs 23373] New Takamizawa variable (TmzV539)

New Takamizawa variable (TmzV539)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV539).

TmzV539
= GSC4476.158 222459.18 +692032.5 (2000.0) 14.06 1
= USNO1575.05160092 222459.198 +692032.72 (2000.0) 12.8 16.3
= IRAS22236+6905 222336.6 +690512 (1950.0)
    F12=0.40  F25=0.16  F60=0.40L F100=2.75L
    VAR= 0 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
= 222458.6 +692034 (2000.0) FSC22236+6905 0.388 0.190 0.359L 4.604L
= 222458.9 +692027 (2000.0) IRAS22236+6905 0.388 0.157 0.400L 2.851L 0%
= 222458.9 +692027 (2000.0) SSC22236+6905 0.388 0.157 0.400L 2.851L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 14.2-14.7p.

object         YYMMDD(UT)   mag  code
TmzV539        970827.540  1143  Tmz.VSOLJ
TmzV539        971218.437  <144p  Tmz.VSOLJ
TmzV539        980823.563  142p  Tmz.VSOLJ
TmzV539        980916.530  144p  Tmz.VSOLJ
TmzV539        981107.440  143p  Tmz.VSOLJ
TmzV539        990709.574  147p  Tmz.VSOLJ
TmzV539        990807.594  146p  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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