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[vsnet-newvar 238] New Takamizawa variable (TmzV690)

New Takamizawa variable (TmzV690)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV690).

TmzV690
= GSC3994.717 221907.58 +594459.4 (2000.0) 14.32 6 N
= IRAS22173+5929 221723.0 +592951 (1950.0)
    F12=1.10  F25=0.36  F60=0.48L F100=25.11L
    VAR= 3 LRS=-1
 possibly I: oxygen-rich non-variable star without 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
= 221907.4 +594458 (2000.0) CS5630 - - 10.7 -
= 221907.7 +594455 (2000.0) IRAS22173+5929 1.135 0.353 0.488L 24.730L 3%
= 221907.7 +594455 (2000.0) SSC22173+5929 1.135 0.353 0.488L 24.730L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.7-<14.4p.

object         YYYYMMDD(UT)   mag  code
TmzV690        19940903.562  139p  Tmz.VSOLJ
TmzV690        19970824.567  137p  Tmz.VSOLJ
TmzV690        19970827.540  140p  Tmz.VSOLJ
TmzV690        19971218.437  142p  Tmz.VSOLJ
TmzV690        19980823.562  137p  Tmz.VSOLJ
TmzV690        19980916.530  138p  Tmz.VSOLJ
TmzV690        19990709.574  143p  Tmz.VSOLJ
TmzV690        19990807.594  144p  Tmz.VSOLJ
TmzV690        19991226.462  <144p  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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