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[vsnet-obs 23605] New Takamizawa variable (TmzV570)

New Takamizawa variable (TmzV570)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV570).

TmzV570
= GSC4261.293 214116.57 +664053.8 (2000.0) 14.23 1
= USNO1500.08354233 214116.625 +664053.98 (2000.0) 12.8 17.4
= IRAS21401+6627 214011.1 +662709 (1950.0)
    F12=0.58  F25=0.19  F60=0.40L F100=17.37L
    VAR=10 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
= 214116.6 +664058 (2000.0) FSC21401+6627 0.541 0.197 0.528L 6.415L
= 214116.7 +664051 (2000.0) IRAS21401+6627 0.605 0.189 0.400L 16.980L 10%
= 214116.7 +664051 (2000.0) SSC21401+6627 0.605 0.189 0.400L 16.980L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 14.3-14.9p.

  (Note: the object is within a T-association; may be an IN-type variable)

object         YYMMDD(UT)   mag  code
TmzV570        970827.540  143p  Tmz.VSOLJ
TmzV570        971218.437  145p  Tmz.VSOLJ
TmzV570        980823.563  144p  Tmz.VSOLJ
TmzV570        980916.530  149p  Tmz.VSOLJ
TmzV570        981107.440  <147p  Tmz.VSOLJ
TmzV570        990709.574  145p  Tmz.VSOLJ
TmzV570        990807.594  147p  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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