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[vsnet-newvar 216] New Takamizawa variable (TmzV668)

New Takamizawa variable (TmzV668)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV668).

TmzV668
= GSC4264.636 221734.22 +605637.4 (2000.0) 12.46 6
= USNO1500.09059692 221734.244 +605637.22 (2000.0) 11.7 16.0
= IRAS22158+6041 221553.0 +604141 (1950.0)
    F12=0.76  F25=0.28L F60=1.00  F100=14.45 
    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
= 221734.5 +605642 (2000.0) IRAS22158+6041 0.756 0.272L 1.042 13.820 -1%
= 221734.5 +605642 (2000.0) SSC22158+6041 0.756 0.272L 1.042 13.820

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.5-12.9p.

object         YYYYMMDD(UT)   mag  code
TmzV668        19940903.562  125p  Tmz.VSOLJ
TmzV668        19970824.567  127p  Tmz.VSOLJ
TmzV668        19970827.540  128p  Tmz.VSOLJ
TmzV668        19971218.437  129p  Tmz.VSOLJ
TmzV668        19980823.562  129p  Tmz.VSOLJ
TmzV668        19980916.530  126p  Tmz.VSOLJ
TmzV668        19990709.574  127p  Tmz.VSOLJ
TmzV668        19990807.594  128p  Tmz.VSOLJ
TmzV668        19991226.462  128p  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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