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[vsnet-obs 21977] New Takamizawa variable (TmzV487)

New Takamizawa variable (TmzV487)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV487).

TmzV487
= GSC6014.570 090016.57 -164830.7 (2000.0) 12.08 0
= USNO0675.07100908 090016.596 -164831.04 (2000.0) 10.5 12.4
= IRAS08579-1636 085757.0 -163643 (1950.0)
    F12=1.90  F25=0.91  F60=0.40L F100=1.00L
    VAR= 9 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
= 090015.7 -164829 (2000.0) SD-16.2661 10.
= 090016.4 -164828 (2000.0) FSC08579-1636 1.940 0.871 0.176 1.090L
= 090016.4 -164828 (2000.0) IRAS08579-1636 1.982 0.934 0.400L 1.009L 9%
= 090016.4 -164828 (2000.0) SSC08579-1636 1.982 0.934 0.400L 1.009L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.4-12.5p.

object         YYMMDD(UT)   mag  code
TmzV487        941109.794  122p  Tmz.VSOLJ
TmzV487        950203.655  118p  Tmz.VSOLJ
TmzV487        960112.567  119p  Tmz.VSOLJ
TmzV487        971105.778  125p  Tmz.VSOLJ
TmzV487        980102.642  115p  Tmz.VSOLJ
TmzV487        980125.544  114p  Tmz.VSOLJ
TmzV487        980322.524  119p  Tmz.VSOLJ
TmzV487        980329.476  121p  Tmz.VSOLJ
TmzV487        981117.801  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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