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[vsnet-newvar 257] New Takamizawa variable (TmzV709)

New Takamizawa variable (TmzV709)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV709).

TmzV709
= GSC4264.1075 223157.15 +601352.0 (2000.0) 13.39 6
= USNO1500.09221353 223157.203 +601351.96 (2000.0) 12.8 16.7
= IRAS22301+5958 223007.7 +595828 (1950.0)
    F12=0.69  F25=0.28  F60=0.83L F100=6.31L
    VAR= 3 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
= 223157.4 +601355 (2000.0) IRAS22301+5958 0.722 0.283 0.824L 6.249L 3%
= 223157.4 +601355 (2000.0) SSC22301+5958 0.722 0.283 0.824L 6.249L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.9-13.6p.

object         YYYYMMDD(UT)   mag  code
TmzV709        19940903.562  129p  Tmz.VSOLJ
TmzV709        19970824.567  131p  Tmz.VSOLJ
TmzV709        19970827.540  135p  Tmz.VSOLJ
TmzV709        19971218.437  136p  Tmz.VSOLJ
TmzV709        19980823.562  134p  Tmz.VSOLJ
TmzV709        19980916.530  136p  Tmz.VSOLJ
TmzV709        19990709.574  133p  Tmz.VSOLJ
TmzV709        19990807.594  136p  Tmz.VSOLJ
TmzV709        19991226.462  134p  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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