[vsnet-obs 23445] New Takamizawa variable (TmzV562)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV562)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV562).

TmzV562
= GSC4274.787 215534.56 +670807.1 (2000.0) 12.89 1
= USNO1500.08636649 215534.554 +670806.90 (2000.0) 11.9 16.4
= IRAS21543+6653 215423.1 +665351 (1950.0)
    F12=0.52  F25=0.25L F60=0.48L F100=4.36L
    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
= 215535.0 +670807 (2000.0) IRAS21543+6653 0.516 0.253L 0.495L 4.262L -1%
= 215535.0 +670807 (2000.0) SSC21543+6653 0.516 0.253L 0.495L 4.262L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.9-13.8p.

object         YYMMDD(UT)   mag  code
TmzV562        970827.540  133p  Tmz.VSOLJ
TmzV562        971218.437  134p  Tmz.VSOLJ
TmzV562        980823.563  129p  Tmz.VSOLJ
TmzV562        980916.530  132p  Tmz.VSOLJ
TmzV562        981107.440  135p  Tmz.VSOLJ
TmzV562        990709.574  138p  Tmz.VSOLJ
TmzV562        990807.594  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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