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[vsnet-obs 24105] New Takamizawa variable (TmzV597)

New Takamizawa variable (TmzV597)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV597).

TmzV597
= GSC4272.1035 222722.53 +642909.4 (2000.0) 13.28 1
= USNO1500.09165288 222722.547 +642909.23 (2000.0) 13.1 17.0
= IRAS22257+6413 222544.4 +641351 (1950.0)
    F12=0.52  F25=0.25L F60=3.63L F100=57.53L
    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
= 222722.9 +642910 (2000.0) IRAS22257+6413 0.517 0.250L 3.510L 56.760L -1%
= 222722.9 +642910 (2000.0) SSC22257+6413 0.517 0.250L 3.510L 56.760L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.5-14.1p.

object         YYMMDD(UT)   mag  code
TmzV597        970827.540  138p  Tmz.VSOLJ
TmzV597        971218.437  141p  Tmz.VSOLJ
TmzV597        980823.563  138p  Tmz.VSOLJ
TmzV597        980916.530  137p  Tmz.VSOLJ
TmzV597        981107.440  140p  Tmz.VSOLJ
TmzV597        990709.574  137p  Tmz.VSOLJ
TmzV597        990807.594  135p  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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