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[vsnet-obs 18750] New Takamizawa variable (TmzV140)

New Takamizawa variable (TmzV140)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV140).

TmzV140
= GSC2904.165 051023.33 +411935.7 (2000.0) 11.96 1
= USNO1275.04460687 051023.340 +411935.39 (2000.0) 10.7 15.2
= IRAS05068+4115 050651.2 +411551 (1950.0)
    F12=1.32  F25=0.48  F60=0.40L F100=1.32L
    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
= 051022.0 +411933 (2000.0) IRAS05068+4115 1.306 0.461 0.400L 1.370L 0%
= 051022.0 +411933 (2000.0) SSC05068+4115 1.306 0.461 0.400L 1.370L

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 11.7-12.8p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV140        941108.597  125p  Tmz.VSOLJ
TmzV140        941224.488  125p  Tmz.VSOLJ
TmzV140        950320.515  127p  Tmz.VSOLJ
TmzV140        950823.769  125p  Tmz.VSOLJ
TmzV140        951128.608  128p  Tmz.VSOLJ
TmzV140        960109.422  128p  Tmz.VSOLJ
TmzV140        960922.747  126p  Tmz.VSOLJ
TmzV140        961015.731  127p  Tmz.VSOLJ
TmzV140        961203.547  126p  Tmz.VSOLJ
TmzV140        970802.749  123p  Tmz.VSOLJ
TmzV140        971123.615  125p  Tmz.VSOLJ
TmzV140        980318.465  128p  Tmz.VSOLJ
TmzV140        980820.731  117p  Tmz.VSOLJ
TmzV140        981024.609  126p  Tmz.VSOLJ
TmzV140        981218.596  118p  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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