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[vsnet-obs 23779] New Takamizawa variable (TmzV576)

New Takamizawa variable (TmzV576)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV576).

TmzV576
= GSC4256.268 211734.90 +651946.4 (2000.0) 11.99 1
= GSC4256.268 211735.00 +651946.8 (2000.0) 11.93 1
= USNO1500.07982632 211734.925 +651946.68 (2000.0) 11.6 15.3
= IRAS21165+6507 211635.7 +650710 (1950.0)
    F12=0.58  F25=0.28L F60=0.40L F100=19.05L
    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
= 211734.9 +651949 (2000.0) IRAS21165+6507 0.576 0.273L 0.400L 18.420L -1%
= 211734.9 +651949 (2000.0) SSC21165+6507 0.576 0.273L 0.400L 18.420L
= 211735.2 +651941 (2000.0) FSC21166+6507 0.609 0.164 0.410L 6.188L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.0-13.0p.

object         YYMMDD(UT)   mag  code
TmzV576        970827.540  130p  Tmz.VSOLJ
TmzV576        971218.437  128p  Tmz.VSOLJ
TmzV576        980823.563  124p  Tmz.VSOLJ
TmzV576        980916.530  121p  Tmz.VSOLJ
TmzV576        981107.440  123p  Tmz.VSOLJ
TmzV576        990709.574  120p  Tmz.VSOLJ
TmzV576        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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