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[vsnet-obs 23448] New Takamizawa variable (TmzV565)

New Takamizawa variable (TmzV565)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV565).

TmzV565
= GSC4274.658 215436.52 +664524.3 (2000.0) 13.39 1
= USNO1500.08617385 215436.516 +664524.17 (2000.0) 13.1 17.4
= IRAS21533+6631 215323.8 +663109 (1950.0)
    F12=1.32  F25=0.69  F60=0.44L F100=4.78L
    VAR= 6 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
 or VIb: variable star with relatively hot dust close to
      the star and relatively cold dust at large distance
      may be O-rich
 or VII: variable star with more evolved C-rich circumstellar shell
= 215436.6 +664523 (2000.0) IRAS21533+6631 1.303 0.687 0.433L 4.762L 6%
= 215436.6 +664523 (2000.0) SSC21533+6631 1.303 0.687 0.433L 4.762L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.6-14.3p.

object         YYMMDD(UT)   mag  code
TmzV565        970827.540  140p  Tmz.VSOLJ
TmzV565        971218.437  136p  Tmz.VSOLJ
TmzV565        980823.563  143p  Tmz.VSOLJ
TmzV565        980916.530  137p  Tmz.VSOLJ
TmzV565        981107.440  141p  Tmz.VSOLJ
TmzV565        990709.574  139p  Tmz.VSOLJ
TmzV565        990807.594  142p  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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